Malicious PDF — malware analysis report

Static analysis result for SHA-256 32467ce925a340c2…

MALICIOUS

PDF

17.8 KB Created: 2021-06-09 04:04:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 3f97ad7e3ecc8d94ec5722ada3083fb6 SHA-1: e99d2f731351d8961571978cbf76a6ad15d52275 SHA-256: 32467ce925a340c2932d731d36e7e862dec698411adb982bafc7f8d750ad4423
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a redirector lure, specifically mentioning a 'free generator / game hack' and linking to a URL associated with malicious infrastructure. The document body, though heavily obfuscated, contains references to game hacks and the same URL. This indicates a phishing attempt to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 https://netcdn.tw/app/431946152/roblox-the-plaza-money-hack-game-hack In PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/mc-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/cube-eat-cube-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-com-roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text