Malicious PDF — malware analysis report

Static analysis result for SHA-256 a399018732d47548…

MALICIOUS

PDF

14.8 KB Created: 2021-07-06 20:34:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c196b125bbd65c0bb07398b1bcd610f4 SHA-1: a0728be07d9164553e9de5fec4a709fdae2174ab SHA-256: a399018732d47548c0a46fa8b6d1203d5f675c1312fbb892f7f76e53fb31911a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 0.9937

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/best-way-to-hack-coin-master-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/how-to-hack-in-roblox-mad-games_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/wwwhacktoolcom-freedownload-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-stuff-in-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/vortexx-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/adidas-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cheat-codes-for-call-of-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-24-02-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-install-hacks-to-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-exploit-2021-free_GM431946152.pdfIn PDF document text

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