Malicious PDF — malware analysis report

Static analysis result for SHA-256 290bb955bc5bab8f…

MALICIOUS

PDF

8.0 KB Created: 2021-06-08 14:44:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8a384e92a7d97644e474dff7b021a3a5 SHA-1: ec890b28da0e84cb02df7b02e8007581470415ee SHA-256: 290bb955bc5bab8f74b44a672d90fd8c3e75372a785e3ac22860ffea26de42f5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that is flagged as a malicious redirector and a lure for game hacks. This link likely leads to a phishing page or malware download. The PDF was generated by wkhtmltopdf, suggesting it might be part of a larger phishing campaign, hence the Spearphishing Attachment technique. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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 https://netcdn.tw/app/431946152/how-to-search-for-free-clothes-in-roblox-game-hack In PDF document text