Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e798e3789fff13…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 09:57:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 610ef7ef1586eebff45c074c6ce85b50 SHA-1: a545b494dab62768cf846798e3adfdb4b76f7bc8 SHA-256: 82e798e3789fff13bd9b7ec7c6195a300ece8842b99eec5a2ce0b896af572027
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

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/431946152/inappropriate-roblox-games-2021-game-hack PDF link annotation
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/how-to-add-free-robux-to-your-account_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/robux-hack-without-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/como-tener-robux-gratis-sin-hack-ni-admin_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/fly-hack-dll-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man3kabcirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-game-download_GM406889139.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_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 22496 bytes
SHA-256: 2a23c6cb4916d459610a3f175bfad4c761a872d2e5b65435d84fe8bdc718e1be
font_01_sfnt_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 19548 bytes
SHA-256: 52d5a8dd922b8cb39112b7e45497e38a5d4104f0d7200415e33336fa157fb9f1

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