Malicious PDF — malware analysis report

Static analysis result for SHA-256 191670708b851f96…

MALICIOUS

PDF

35.2 KB Created: 2021-05-17 17:31:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: aafb96924e3500a75422091bb181b887 SHA-1: a1605076a84cd57bbaa8fbb919471b24dd91449a SHA-256: 191670708b851f962c0ade07e414bd5856c98c0d0e74fcafd5f2cbbd2140f091
130 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/get-free-roblox-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00002f25.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F25 25164 bytes
SHA-256: 1cbddea2d4ba5b8d7d95c3233bd3f63ed10f47cde567680bd02a7d10a4eaf6a1
font_01_sfnt_off000068ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BA 18052 bytes
SHA-256: 3163a373a79a6ba2b402f3bc3abf4e04b0a5713e8f73e060e65042d4a11df7ac