Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9134c77ef6b37b9…

MALICIOUS

PDF

8.2 KB Created: 2021-07-05 14:11:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7a583de221aade6ba7bbca1c7a34cc89 SHA-1: 825d9c673e79e8b5d50b135e0aa1e9d3933125b3 SHA-256: f9134c77ef6b37b9c31a3116fa4f8062bfff2edcd3460ec42ba979436efbcb2f
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9847

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 http://netcdn.tw/app/406889139/free-coin-master-spins-hack-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/pubg-uc-event_GM1330123889.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-roblox-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/trolling-gui-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text

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