Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d28fa2214ec9d5…

MALICIOUS

PDF

131.9 KB Created: 2021-07-05 23:02:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 52ff384b183dc80b47b2758cd682785d SHA-1: 94d55d748802a61f3d8adaf9df69d251a21eed2e SHA-256: 84d28fa2214ec9d57edc45afc2fa354ee41dc1249598c8f3f7968c66967fe9ee
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a known malicious domain, disguised as a game hack generator. The document body and metadata indicate it was generated by wkhtmltopdf, suggesting it might be part of a phishing campaign. The embedded URL is the primary indicator of malicious intent, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0102

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/1330123889/pubg-in-uc-hack-game-hack In PDF document text

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