Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb61ce2501c5a722…

MALICIOUS

PDF

15.6 KB Created: 2021-07-22 08:00:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 59e0f109acbff02b58053822c238aca8 SHA-1: 0e94eee888e77e144a4c899c286d8d0ea3b75946 SHA-256: fb61ce2501c5a72248dacfea26bde5dbfb23ef75e55a1a36dc02999746846369
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a "game hack" lure, specifically targeting Roblox users. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to host a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8330

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/431946152/how-to-hack-roblox-to-get-robux-game-hack In PDF document text