Malicious PDF — malware analysis report

Static analysis result for SHA-256 be42b38fcb22307b…

MALICIOUS

PDF

15.1 KB Created: 2021-06-08 18:24:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7d43c588f54b1f211af8109dbb3837ee SHA-1: 51cac1e82a04b4644ba3cefdaf5470d45331b4f2 SHA-256: be42b38fcb22307b091398bbdce36424b1a942a8a312ecb6e119ff6557b128fa
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a 'free generator / game hack' lure, directing users to a URL that is likely malicious. The document body, though partially corrupted, contains references to game hacks and the same suspicious URL. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be a social engineering lure leading to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-get-roblox-shirts-for-free-game-hack PDF link annotation
    • http://jdlrelocation.com/images/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-spins-2021-blogspot_GM406889139In PDF document text

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