Malicious PDF — malware analysis report

Static analysis result for SHA-256 614c0deb618b0e6b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 23:16:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7e08269d4119828b54997ddce4ace4bb SHA-1: 0076b8430e02494b3e284cd66e329147681d9c9d SHA-256: 614c0deb618b0e6b1492707adc78bc300144ed58e3975954372ca3bb7e4a2aa3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one specifically advertising 'coin-master-free-spin-whatsapp-group-link-game-hack'. This lure, combined with the ML classifier's high confidence, indicates a likely attempt to trick users into visiting malicious sites for game cheats or similar scams. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/coin-master-free-spin-whatsapp-group-link-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org/repository/free-model-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/new-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-bubble-gum-unlimited-candy-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/darkblox-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-vip-server-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/anyway-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-glasses-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-crashes-every-time-i-run-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000305a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305A 22620 bytes
SHA-256: aa6bac0bdb7229340736e6e3cf34bd56fc9da5ffd546a92bbf15358bac1940a1
font_01_sfnt_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 18848 bytes
SHA-256: 2c2ea5b3a51a3b352e1f4799f7252da1b365e6addc950cb05b17984e9b3d5bd7

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