Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a26e40784cff78…

MALICIOUS

PDF

1.4 KB Created: 2021-07-04 00:27:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9467344129fc2e587eccee3ec3ad6501 SHA-1: 30eebf09d15934385de6e1e069d65639a26cb086 SHA-256: f1a26e40784cff78334b1bb3c3ae7a2732e23906ba8a59a1077ca7387f270ba3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a website offering 'robux hack generator' and 'game hack' services. This is a common lure to entice users to click malicious links, which often lead to malware downloads or phishing pages. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with known malicious redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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/robux-hack-generator-game-hack In PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/cheat-monnaie-roblox_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text

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