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WebAssembly module
API
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Module analysis/api/v1/wasm/a0ed8d98db04f5bc20e3202e1e852e46f694f2310b8a063e7a0cd6f02dedbaa1Decompiled code/api/v1/wasm/a0ed8d98db04f5bc20e3202e1e852e46f694f2310b8a063e7a0cd6f02dedbaa1/code

a0ed8d98db04f5bc20e3202e1e852e46f694f2310b8a063e7a0cd6f02dedbaa1

Known library: dotLottie animation playerDense data
Download .wasmSearch scans with this module

The file is the module exactly as the page had it. WebAssembly does nothing on its own: it runs only when a script instantiates it. Labels describe what the module contains and are leads, not verdicts.

At a glance

What it is
Known library: dotLottie animation player.
Names it came with
Came with the npm package @lottiefiles/dotlottie-web 0.40.2 · From cdn.jsdelivr.net · File name: dotlottie-player. Its build and the addresses it came from say so; whoever builds a module chooses these, so they are hints.
How it was built
Written in Rust and compiled with Emscripten.
What it can do
None of its imports reaches the network, runs code or changes the page. Judged from the names of its imports.
Where we saw it
On 1 public scan, 2026-10-05.
Findings
Dense data. Leads, not verdicts: legitimate modules show these too.
Size
1.1 MiB
First seen
2026-10-05
Last seen
2026-10-05
Public scans
1
Functions
3643
Imports
55
Exports
18
Data segments
346

How it was built

Written in Rust and compiled with Emscripten.

Language
RustThe Rust compiler (rustc) left its name in the module.
Compiler
EmscriptenThe toolchain that compiles C and C++ (sometimes Rust) for the web. It comes with the JavaScript that loads the module.
Compiler backend
LLVMThe code generator behind rustc, clang, Emscripten and TinyGo.

Read from text inside the module (its build metadata and paths the compiler left) and from its import and export names. Whoever builds a module can change or remove these, so treat them as hints. They say how a module was made, not what it does.

Hashing and cipher code

Algorithms recognised from their published constants, tables and rotation amounts: CRC-32. Legitimate modules use them all the time, for hashing, captchas and encryption, so this is a lead, not a verdict.

  • function 1665CRC-32 · a table it reads

Decompiled code

3,642 of 3,643 functions decompiled to C-like pseudocode; 55 more are imported from the page.

  • 1 of 3,643 functions could not be decompiled.

Decompiled code is a reconstruction from the file, so names and types are often guesses. Query values in URLs are masked here; the downloaded file is unchanged.

FunctionSizeBlocksComplexityNotes
No functions match.

File layout

WebAssembly binary format version 1, core module, 10 sections.

SectionOffsetSizeItems
type0x81.1 KiB147
import0x49e335 bytes55
function0x5ed3.6 KiB3,643
table0x14409 bytes1
memory0x14499 bytes1
global0x145215 bytes2
export0x1461107 bytes18
element0x14cc2.8 KiB1
code0x20091.0 MiB3,643
data0x10265d110.4 KiB346
Memory
267 pages (16.7 MiB), up to 32,768 pages (2.0 GiB)
Table
1,460 entries, up to 1,460 entries, funcref
Globals
2
Element segments
1
Function names
none (names were stripped)

Data segments

Each bar is one segment of the module's data: as wide as its size, as tall as its entropy. Bars above the dashed line are encrypted or compressed. 346 segments, 107.9 KiB in all. The chart shows 65: the first 64 and every encrypted or compressed one.

281 segments not drawn (37.3 KiB)02468Segment 0: 2,732 bytes, 4.81 bits per byteSegment 1: 3,967 bytes, 5 bits per byteSegment 3: 15 bytes, 3.32 bits per byteSegment 4: 224 bytes, 0.07 bits per byteSegment 5: 227 bytes, 3.4 bits per byteSegment 6: 2,493 bytes, 6.64 bits per byteSegment 9: 1,305 bytes, 2.42 bits per byteSegment 14: 2 bytes, 1 bits per byteSegment 15: 2 bytes, 1 bits per byteSegment 16: 2 bytes, 1 bits per byteSegment 17: 3 bytes, 1.58 bits per byteSegment 18: 3 bytes, 1.58 bits per byteSegment 19: 3 bytes, 1.58 bits per byteSegment 20: 3 bytes, 1.58 bits per byteSegment 21: 4 bytes, 2 bits per byteSegment 22: 4 bytes, 2 bits per byteSegment 23: 4 bytes, 2 bits per byteSegment 24: 5 bytes, 2.32 bits per byteSegment 25: 5 bytes, 2.32 bits per byteSegment 26: 5 bytes, 2.32 bits per byteSegment 27: 6 bytes, 2.58 bits per byteSegment 28: 6 bytes, 2.58 bits per byteSegment 29: 6 bytes, 2.58 bits per byteSegment 30: 6 bytes, 2.58 bits per byteSegment 31: 7 bytes, 2.81 bits per byteSegment 32: 7 bytes, 2.81 bits per byteSegment 34: 203 bytes, 6.06 bits per byteSegment 35: 620 bytes, 6.14 bits per byteSegment 36: 5 bytes, 2.32 bits per byteSegment 37: 1,083 bytes, 5.82 bits per byteSegment 38: 51 bytes, 1.3 bits per byteSegment 39: 2,357 bytes, 6.61 bits per byteSegment 40: 16 bytes, 1.01 bits per byteSegment 44: 64 bytes, 2.21 bits per byteSegment 45: 2,246 bytes, 5.29 bits per byteSegment 46: 150 bytes, 5.35 bits per byteSegment 47: 12 bytes, 1.58 bits per byteSegment 48: 6 bytes, 1.79 bits per byteSegment 49: 2 bytes, 1 bits per byteSegment 50: 150 bytes, 5.51 bits per byteSegment 51: 12,574 bytes, 6.07 bits per byteSegment 52: 884 bytes, 5.05 bits per byteSegment 53: 1,219 bytes, 4.99 bits per byteSegment 54: 867 bytes, 5.04 bits per byteSegment 55: 83 bytes, 3.33 bits per byteSegment 56: 69 bytes, 3.44 bits per byteSegment 57: 21 bytes, 3.06 bits per byteSegment 58: 101 bytes, 3.3 bits per byteSegment 59: 1,494 bytes, 5.22 bits per byteSegment 60: 98 bytes, 2.69 bits per byteSegment 61: 18 bytes, 2.19 bits per byteSegment 62: 18 bytes, 1.93 bits per byteSegment 63: 62 bytes, 2.55 bits per byteSegment 7: 21,976 bytes, 7.77 bits per byteSegment 10: 5,457 bytes, 7.93 bits per byteSegment 33: 6,880 bytes, 7.56 bits per byteSegment 222: 2,519 bytes, 7.8 bits per byte
data segment encrypted or compressed 281 segments not drawn 7.5 bits per byteHeight: bits per byte. Width: share of all the data.
  • Segment 7: 21,976 bytes at 7.77 bits per byte
  • Segment 10: 5,457 bytes at 7.93 bits per byte
  • Segment 33: 6,880 bytes at 7.56 bits per byte
  • Segment 222: 2,519 bytes at 7.8 bits per byte

Imports (55)

  • a.a
  • a.b
  • a.c
  • a.d
  • a.e
  • a.f
  • a.g
  • a.h
  • a.i
  • a.j
  • a.k
  • a.l
  • a.m
  • a.n
  • a.o
  • a.p
  • a.q
  • a.r
  • a.s
  • a.t
  • a.u
  • a.v
  • a.w
  • a.x
  • a.y
  • a.z
  • a.A
  • a.B
  • a.C
  • a.D
  • a.E
  • a.F
  • a.G
  • a.H
  • a.I
  • a.J
  • a.K
  • a.L
  • a.M
  • a.N
  • a.O
  • a.P
  • a.Q
  • a.R
  • a.S
  • a.T
  • a.U
  • a.V
  • a.W
  • a.X

Exports (18)

Scripts that carry or load it

  • esm.sh loads it; the script is minified or bundled.

From public scans. A script loads a module when it fetches or compiles it.

Text it passes to the page

Fixed text the module hands to the page's JavaScript when it calls an import, read from the module file. Imports that reach the network, run code or change the page come first; web addresses are shown as their host.

ImportText
a.$DotLottiePlayer
a.Astd::string
a.Astd::basic_string<unsigned char>
a.Vbool
a.Wvoid
a.cn_bits >= 0
a.c../../../modules/thorvg/src/loaders/webp/utils/bit_reader.cpp
a.cVP8LReadBits
a.cbr != NULL && br->buf_ != NULL
a.c../../../modules/thorvg/src/loaders/webp/dec/../utils/bit
a.cVP8LoadNewBytes
a.cmeta_index < hdr->num_htree_groups_
a.c../../../modules/thorvg/src/loaders/webp/dec/vp8l.cpp
a.cGetHtreeGroupForPos
a.cReadTransform
a.cdec->next_transform_ <= NUM_TRANSFORMS
a.cdata == NULL
a.cDecodeImageStream
a.cstart != NULL
a.c../../../modules/thorvg/src
a.cVP8InitBitReader
a.cstart <= end
a.c../../../modules/thorvg/src/
a.cbr->pos_ <= br->len_
a.c../../../modules/thorvg/src/loaders/webp/dec/./../utils/bit_reader.h
a.cVP8LIsEndOfStream
a.cdec->next_transform_ == 1
a.cApplyInverseTransformsAlpha
a.ctransform->type_ == COLOR_INDEXING_TRANSFORM
a.cdec->incremental_

Showing 30 of 207.

In our sandbox

  • Produced 1 string at run time, listed below.

Strings it produced at run time

Text that appeared while it ran and is not in the file: decoded, decrypted or built by its code. Web addresses are shown as their host.

  1. >?>>?456789:;<=

Checks we ran

  • Threat-feed matches: none
  • Names of mining software or pools: none
  • CryptoNight mining structure: not found
  • Hashing or cipher loops: none
  • Known hashing or cipher algorithms: CRC-32
  • Encrypted or compressed data: 1 block, 2.5 KiB (2.3% of its data)
  • JavaScript stored inside: none
  • Other modules inside: none
  • Imports that read browser or page details: none
  • Function names: removed (usual in release builds)

Static checks of the file: nothing in it was run for these. A finding is a lead, not a verdict.

Shares code with

Other modules that contain some of the same functions. They are ranked by functions few modules have, so a language's own runtime does not link every module built with it. Shared code often means a shared library or the same developer. It is a lead, not a verdict.

  • 1ad3a28a…3d2d441.8 MiB · first seen 2026-10-07 · 872 functions in common (55% of this module's, 39% of that one's)
  • 6a42bf81…7406dc1.3 MiB · first seen 2026-10-03 · 490 functions in common (31% of this module's, 28% of that one's)
  • 8f0e3989…df8a0c1.3 MiB · first seen 2026-10-05 · 486 functions in common (31% of this module's, 28% of that one's)
  • 13bb86d2…45a4401.3 MiB · first seen 2026-10-08 · 470 functions in common (30% of this module's, 27% of that one's)
  • 81721482…520b611.3 MiB · first seen 2026-10-07 · 466 functions in common (29% of this module's, 26% of that one's)
  • 48dcfd9a…8c4ced1.5 MiB · first seen 2026-10-27 · 463 functions in common (29% of this module's, 24% of that one's)
  • 1705b67f…108cac1.5 MiB · first seen 2026-10-08 · 458 functions in common (29% of this module's, 23% of that one's)
  • f26659c7…352eae1.1 MiB · first seen 2026-10-05 · 362 functions in common (23% of this module's, 26% of that one's)

Seen on 1 public scan

PageTitleSeenHow it got there
www.cardiffhalfmarathon.co.ukEnter The 2027 Ballot | Cardiff Half Marathon2026-10-05Built by a script at run time; Downloaded as a file