Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d520bff3699fef…

MALICIOUS

PDF

2.6 KB Created: 2021-07-08 14:47:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8f729ec065d9d982ecc47bf4e565f70d SHA-1: aa4d6104aaf04237d9b8ef40907c0f6d63669a33 SHA-256: b0d520bff3699fef40a486d6869133fca0a60ae9ca4ba68e5929d1f2a2a21ac6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that redirect to known malicious infrastructure, specifically advertising game hacks and free in-game currency. The ML classifier also flagged this PDF as malicious. The embedded URLs likely lead to further malicious content or phishing pages, aiming to trick users into downloading additional malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9794

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/roblox-prison-life-hack-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-with-roblox-redeem-card_GM431946152.pdfIn PDF document text

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