Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b8c304baad0486…

MALICIOUS

PDF

2.02 MB Authoring application: Skia/PDF m150 Google Docs Renderer First seen: 2026-05-22
MD5: 4e691be30ee7fa8ae22febbac3cc2cb4 SHA-1: 737d2df2456bfde9dbb6dfab847fbbc813065cc5 SHA-256: a3b8c304baad0486fbda7b5ba57729c2da6f9e19b89180d70ca625f9ad018aec
66 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0023

Heuristics 4

  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://5debdre4s0m6dz3jum1dlsxo30.hop.clickbank.net PDF link annotation
    • https://5debdre4s0m6dz3jum1dlsxo30.hop.clickPDF link annotation
🗂 Part of campaign: hop.click 54 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000002c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C8 349848 bytes
SHA-256: 0b68c76c2eeee8ca2d52b61dd2cc1a1b52b6ff7d1c7324da6f7a94469647f3aa
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.60, consistent with packed or encrypted content.
stream_004_off000515e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515E4 638676 bytes
SHA-256: 10a047902c62442d429253570987fad613b2e0fabf436cf3891856582ff94515
stream_006_off000c13ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC13AE 611556 bytes
SHA-256: 489b7761f8d91b3891d38cd318812847f1d8c9f52c0b87c7f9d243848bef2d24
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.61, consistent with packed or encrypted content.
stream_010_off0014043e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14043E 408156 bytes
SHA-256: 6e092989f2fc28ed2aab5bc3db0b932f9dc62baf0f1479e50552aa082fcd1fa2
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.41, consistent with packed or encrypted content.
stream_012_off001851bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1851BF 611556 bytes
SHA-256: 6addc4ae8b09710a2616d356feb27fdb62fb5b0a1255698f71bb0c411f2fdfe1
icc_00_off000000f1.icc pdf-icc-profile PDF ICC profile at offset 0xF1 536 bytes
SHA-256: d9f822e8083f2f4d1c91e887454be5f75e8c7144b2853408f361e3c4a7a6b36d
font_00_sfnt_off001f7fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F7FAD 54984 bytes
SHA-256: f9409d314a7b730aa50d245dd07f9c7fe78309ed625732e31b0e00e5946929dd
font_01_sfnt_off001ff65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF65E 36132 bytes
SHA-256: b3eb3ee8b538332ad2f924c1906635fd08688655d6f8a08a03de21f9b543d8c9

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