Malicious PDF — malware analysis report

Static analysis result for SHA-256 30979bdd6a9c9f8d…

MALICIOUS

PDF

40.5 KB Created: 2021-04-30 04:30:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 821060f2c485a57b1b585b1e55b8dade SHA-1: 47996a3f7041b78efa5d436337680fc8e7f18f2a SHA-256: 30979bdd6a9c9f8dcba6e9cb9577f8800ffca46379a8e6e34181ae0cedababfe
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/what-is-the-speed-hack-code-on-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/how-to-modify-stats-in-roblox-using-cheat-engine.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-2021-gamingthix.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-make-your-own-roblox-hack-injector.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/5-000-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-login-hack-password.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/new-hack-jailbreak-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacks-for-roblox-apps.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-hack-on-tablet.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/theme-park-tycoon-2-roblox-money-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-games-made-by-roblox.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_off00004122.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4122 25096 bytes
SHA-256: 1f0a60a119f89a9063dd1590a80512bc1ec550edf48eb68a983ea7d525f1ac34
font_01_sfnt_off00007a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A00 19000 bytes
SHA-256: 15f6b4c25f91b1c2f14cf5684ebf2956e3830f533cb64ab80f45f0baf08347f4

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