Malicious PDF — malware analysis report

Static analysis result for SHA-256 978a00251d95e5e0…

MALICIOUS

PDF

45.4 KB Created: 2021-04-27 10:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bd5ea9394603839ab5244f39e3acad38 SHA-1: 2a0064da3ec170bad871f2d99f2b7445145a4cc9 SHA-256: 978a00251d95e5e0b8109a0d765e644b6dd1270faeec8a86d0e51ec609f3b07e
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 0.9814

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/how-to-get-free-robux-with-the-nopde-cheat-engine-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/hack-for-pet-simulator-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/norwegian-resort-music-roblox-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/www-mistplay-com-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-roblox-adopt-me-money-infinite.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-buildermans-password-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-password-hacker-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-membership-codes-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-roblox-rom.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-pastel-hair-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-with-chrome-extensions.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000044a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44A1 26848 bytes
SHA-256: d6397796a6ee4cac8739b1f46e9a4275450a01f496fb7598790dbfbfcf237752
font_01_sfnt_off000081ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7C 19632 bytes
SHA-256: 9c2ab6e29b2c0807b95cdaee8b84a6bc37a0199c1601f1854a4e983436b4cc53

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