Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2238577ac0922b1…

MALICIOUS

PDF

31.7 KB Created: 2021-04-28 16:46:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 70ccfd858e10de2d7d41be6126f1251d SHA-1: 37dd9d06b9727b2ffc526ae097337f68a1aab2c3 SHA-256: d2238577ac0922b141e3bd70cc7caf529e50be8f3fd6344482fde30b98dbff27
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it's a game hack lure, directing users to a suspicious URL. The ML classifier also flagged it as malicious. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a malicious site, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-walk-through-walls-cheat-engine-jailbreak-game-hack PDF link annotation
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-hack-other-roblox-accounts.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-make-a-free-robux-hack.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/como-hackear-conta-de-roblox.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003ccf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3CCF 26692 bytes
SHA-256: adffd8c48efcd9e612253593a2de314c95f2ef47fd54f43283040d6f5ccf243a

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