Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c92fae4438ad41…

MALICIOUS

PDF

1.2 KB Created: 2021-07-04 12:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b7a63e8672c2b2042d9bd916c374511c SHA-1: c22f1d2e1c3e85ce1dbbbe50eb874c2fe8a2e594 SHA-256: 66c92fae4438ad4160ed4a638d36a95d609528d4116e99795c0ffdaf6562d170
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, masquerading as a free game hack or generator. The document body and heuristics indicate a lure to a URL associated with malicious redirectors. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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 http://netcdn.tw/app/479516143/get-minecraft-windows-10-free-game-hack In PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text

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