Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2d00b8839cb5d9…

MALICIOUS

PDF

2.5 KB Created: 2021-07-05 22:26:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: dcf1aecb993944ab68d912531dd201b8 SHA-1: b8dd57f05acdc9a7132cbde0271f3692f9d5c8d8 SHA-256: 2d2d00b8839cb5d9148da0380b8a11e29fd250024973022e467b05a0bd4375c2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious redirector links is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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/free-robux-accounts-2021-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/master-game_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-wurst_GM479516143.pdfIn PDF document text

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