Malicious PDF — malware analysis report

Static analysis result for SHA-256 b134dac75e114064…

MALICIOUS

PDF

7.8 KB Created: 2021-06-11 12:53:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ba587c4c2b3bd570139ed62b949a1b6 SHA-1: 352d7b6cc9c6c7749d76bdc59f89aedc7855ad04 SHA-256: b134dac75e114064dd9ae4e46caf6f5fa4118f5927acc891e1443f5f77c17e14
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure related to 'Free Robux' and a game hack, directing the user to a URL associated with malicious redirectors. The ML classifier also flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a gateway to a phishing site or a payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

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/free-robux-obby-by-elevanoz-game-hack In PDF document text

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