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WebAssembly module
API
This view is built from:
Module analysis/api/v1/wasm/48dcfd9a46208721c62ba6a9d0b6c942ed97429ba3a069d50c72532e028c4cedDecompiled code/api/v1/wasm/48dcfd9a46208721c62ba6a9d0b6c942ed97429ba3a069d50c72532e028c4ced/code

48dcfd9a46208721c62ba6a9d0b6c942ed97429ba3a069d50c72532e028c4ced

Known library: dotLottie animation player
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 0.61.0 · 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, 2026-10-27.
Findings
Nothing flagged by the checks below.
Size
1.5 MiB
First seen
2026-10-27
Last seen
2026-10-27
Public scans
1
Functions
5092
Imports
57
Exports
23
Data segments
369

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.

What it is made of

10 Rust crates from crates.io, with the versions it was built with:

Read from text the build left in the module: source paths, build metadata and .NET metadata. Whoever builds a module can change or remove it, so treat it as a hint.

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.

Decompiled code

5,089 of 5,092 functions decompiled to C-like pseudocode; 57 more are imported from the page.

  • 3 of 5,092 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, 11 sections.

SectionOffsetSizeItems
type0x81.4 KiB170
import0x572349 bytes57
function0x6cf5.0 KiB5,092
table0x1ae29 bytes1
memory0x1aeb9 bytes1
global0x1af415 bytes2
export0x1b03138 bytes23
element0x1b8d4.0 KiB1
datacount0x2b6c4 bytes
code0x2b701.3 MiB5,092
data0x14e8b4171.2 KiB369
Memory
268 pages (16.8 MiB), up to 32,768 pages (2.0 GiB)
Table
2,064 entries, up to 2,064 entries, funcref
Globals
2
Element segments
1
Declared data segments
369
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. 369 segments, 168.6 KiB in all. The chart shows 64: the first 64 and every encrypted or compressed one.

305 segments not drawn (111.8 KiB)02468Segment 0: 22,097 bytes, 5.17 bits per byteSegment 2: 1,237 bytes, 4.77 bits per byteSegment 4: 15,328 bytes, 6.73 bits per byteSegment 5: 80 bytes, 5.6 bits per byteSegment 6: 3,758 bytes, 4.88 bits per byteSegment 7: 410 bytes, 1.62 bits per byteSegment 10: 25 bytes, 1.42 bits per byteSegment 11: 4,639 bytes, 6.82 bits per byteSegment 12: 1,298 bytes, 3.94 bits per byteSegment 13: 114 bytes, 2.12 bits per byteSegment 14: 77 bytes, 1.43 bits per byteSegment 15: 118 bytes, 2.38 bits per byteSegment 16: 101 bytes, 1.78 bits per byteSegment 17: 105 bytes, 1.74 bits per byteSegment 18: 17 bytes, 0.95 bits per byteSegment 19: 25 bytes, 1.29 bits per byteSegment 20: 172 bytes, 2.89 bits per byteSegment 21: 51 bytes, 1.5 bits per byteSegment 22: 109 bytes, 1.86 bits per byteSegment 23: 2,173 bytes, 3.64 bits per byteSegment 24: 900 bytes, 7.28 bits per byteSegment 25: 17 bytes, 4.09 bits per byteSegment 26: 695 bytes, 6.02 bits per byteSegment 27: 690 bytes, 6.26 bits per byteSegment 28: 497 bytes, 4.21 bits per byteSegment 29: 9 bytes, 1.45 bits per byteSegment 30: 204 bytes, 4.57 bits per byteSegment 31: 402 bytes, 3.16 bits per byteSegment 32: 21 bytes, 3.46 bits per byteSegment 33: 287 bytes, 4.41 bits per byteSegment 34: 53 bytes, 3.36 bits per byteSegment 35: 21 bytes, 3.27 bits per byteSegment 36: 113 bytes, 3.44 bits per byteSegment 37: 71 bytes, 3.77 bits per byteSegment 38: 219 bytes, 4.1 bits per byteSegment 39: 61 bytes, 4.05 bits per byteSegment 40: 175 bytes, 3.92 bits per byteSegment 41: 133 bytes, 3.94 bits per byteSegment 42: 33 bytes, 3.77 bits per byteSegment 43: 15 bytes, 3.32 bits per byteSegment 44: 21 bytes, 3.37 bits per byteSegment 45: 101 bytes, 3.9 bits per byteSegment 46: 111 bytes, 4.29 bits per byteSegment 47: 21 bytes, 3.33 bits per byteSegment 48: 275 bytes, 4.27 bits per byteSegment 49: 195 bytes, 4.12 bits per byteSegment 50: 33 bytes, 3.77 bits per byteSegment 51: 81 bytes, 3.98 bits per byteSegment 52: 63 bytes, 3.85 bits per byteSegment 53: 15 bytes, 3.46 bits per byteSegment 54: 21 bytes, 3.27 bits per byteSegment 55: 21 bytes, 3.33 bits per byteSegment 56: 21 bytes, 3.33 bits per byteSegment 57: 244 bytes, 4.74 bits per byteSegment 58: 21 bytes, 3.17 bits per byteSegment 59: 21 bytes, 3.36 bits per byteSegment 60: 71 bytes, 3.66 bits per byteSegment 61: 83 bytes, 3.87 bits per byteSegment 62: 69 bytes, 2.59 bits per byteSegment 63: 33 bytes, 3.73 bits per byte
data segment encrypted or compressed 305 segments not drawn 7.5 bits per byteHeight: bits per byte. Width: share of all the data.

Imports (57)

  • 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 (23)

Scripts that carry or load it

  • react-email-demo-o73jtl7e7-resend.vercel.app 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.$void
a.Afloa
a.Adouble
a.DMode
a.Zstd::string
a._bool
a.cn_bits >= 0
a.cdeps/thorvg/src/loaders/webp/utils/bit_reader.cpp
a.cVP8LReadBits
a.cbr != NULL && br->buf_ != NULL
a.cdeps/thorvg/src/loaders/webp/dec/../utils/bit_reader_inl.
a.cVP8LoadNewBytes
a.cmeta_index < hdr->num_htree_groups_
a.cdeps/thorvg/src/loaders/webp/dec/vp8l.cpp
a.cGetHtreeGroupForPos
a.cbr->bit_pos_ >= VP8L_WBITS
a.cVP8LDoFillBitWindow
a.cevery
a.cReadTransform
a.cdec->next_transform_ <= NUM_TRANSFORMS
a.copacity
a.cnum_htree_groups <= MAX_HTREE_GROUPS
a.cdeps/thorvg/src/loaders/webp/
a.cVP8LHtreeGroupsNew
a.cdata == NULL
a.cDecodeImageStream
a.cbr != NULL
a.cVP8LInitBitReader
a.cstart != NULL
a.clength < 0xfffffff8u

Showing 30 of 276.

In our sandbox

  • Produced 2 strings 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. PointerUpPointerDownPointerEnterPointerMovePointerExitClickOnCompleteOnLoopCompleteNumericStringBooleanEventParsing erro
  2. >?>>?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: none
  • 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 · 506 functions in common (26% of this module's, 23% of that one's)
  • a0ed8d98…edbaa11.1 MiB · first seen 2026-10-05 · 463 functions in common (24% of this module's, 29% of that one's)
  • 2c62b114…37fb031.1 MiB · first seen 2026-10-14 · 447 functions in common (23% of this module's, 28% of that one's)
  • f26659c7…352eae1.1 MiB · first seen 2026-10-05 · 176 functions in common (9% of this module's, 13% of that one's)

Seen on 1 public scan

PageTitleSeenHow it got there
react-email-demo-o73jtl7e7-resend.vercel.appReact Email2026-10-27Built by a script at run time; Downloaded as a file