Malicious PDF — malware analysis report

Static analysis result for SHA-256 f82f0b8c27ad16f7…

MALICIOUS

PDF

42.0 KB Created: 2021-04-28 09:45:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e00f96edf2e5b13afe41df0664ef1327 SHA-1: 2811b322f90982246bc3e2891d39ab6526b6c79f SHA-256: f82f0b8c27ad16f74130cc77b21f06b014eb44fc461c56ec18f31b86d13f6419
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 0.9941

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 https://netcdn.xyz/app/431946152/can-you-please-get-me-free-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/kron-hack-for-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-skin-coluor-robux-hack-youtube-robuxianyoutube.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pastbin-robux-hacks-for-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-easy-without-downloading-apps.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/script-executor-for-roblox-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/best-pklayed-games-free-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/snowed-out-v2-roblox-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/cheat-roblox-no-clip.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-and-tix-generator-no-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-birthady-hack.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
stream_003_off00003fd9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FD9 28852 bytes
SHA-256: 7eb538faae065312c12ebceb01db39721a73101f12ef5a646b27382a7adb8be3
font_01_sfnt_off0000809a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809A 18932 bytes
SHA-256: 04575b7f4234f299ed551d8d7d1edaa7ebb13ab0633ffa5c82f1a3eaaba5ca6c

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