Malicious PDF — malware analysis report

Static analysis result for SHA-256 96357f85a8941390…

MALICIOUS

PDF

41.1 KB Created: 2021-05-04 03:26:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ee26eac9dc62765ee1d3b36a524a881b SHA-1: 2a738d18a1970234a2a57df1c522efef504596cc SHA-256: 96357f85a8941390aba2758a6d62014362fdd487754e2d1f7b4ea77f400b675f
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/granny-roblox-games-for-free-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-cool-free-avatars.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-place-view-bot-hack-forums.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-without-doing-a-human-verification.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-use-roblox-hacks.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-2021-no-human-verification-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/robux-script-hack-2021-suffi-de-s-abonner-plus-script.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-room-cheats.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-invincibility-cheat.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacked-roblox-faces.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-protect-against-hacks-in-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
font_00_sfnt_off0000445e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x445E 25400 bytes
SHA-256: 65e43c68a4ca411a2d38b771dffedf0159467b4dcd3d477756f10d8645d1f7d0
font_01_sfnt_off00007dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD1 18616 bytes
SHA-256: 861eab2d5a5bd9264b77bf6e96398b30ae1cd746d4ff526ef0cae1cb3f98b120

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