Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e9b228e400ae32…

MALICIOUS

PDF

41.8 KB Created: 2021-04-28 10:11:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a9cc1ff1f620f1843716fe3a7baf49de SHA-1: 13a7fa9330d7c8ad0a540840a742b1f7aa92916f SHA-256: c2e9b228e400ae3283efbc5d382a01759d5c9c0318d29df395cc94cdf26a83f0
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/roblox-hack-jump-unlimiteed-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-how-to-hack-infinity-rpg.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-costume-roblox-glitch.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-all-packages-for-free-on-roblox-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/dolphin-hacks-roblox-exploits.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-whatever-floats-your-boat-money-hack-site-v3rmillionnet.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hair-free-girl-pink.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/300-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/robux-hack-ohne-handynummer.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-roblox-da-hood-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/robux-cheat-engine-no-survey.pdfIn PDF document text
    • https://freerobux.cyouIn 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_off00004169.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4169 26504 bytes
SHA-256: dda3ddcafb3b6831ad5e52f8b4a32de4408ad2a74fe5f8693aed7bf260d81406
font_01_sfnt_off00007de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 19508 bytes
SHA-256: a8e5e0136e48da0325b3972ac8ffec9b7393bc7303adadaca8a799f023867aed

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