Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be33cf81e9695f4…

MALICIOUS

PDF

42.5 KB Created: 2021-04-27 11:38:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2885d497bf123eb273890665cdbfa55a SHA-1: 1f45d26e9d24130297afc5b7df153e05d6d6153b SHA-256: 7be33cf81e9695f4e9e32cf5e253760e282f9531abf42b3f1b94334f3cf07260
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/how-to-hack-roblox-with-developer-tools-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/cheat-codes-for-vehicle-simulator-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-codes-free-robux-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-legit-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-accounts-that-are-banned.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-without-human-verification-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/map-kat-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-roblox-with-kali-linux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/11-4-2021-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-fly-hack-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-raindrop-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_off00004219.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4219 26828 bytes
SHA-256: 47cc4b68c523fa29e5806642592a679fca494a301d7b9bc8867efbfce4be5de0
font_01_sfnt_off00008137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8137 19392 bytes
SHA-256: 98cfaafb5e8af2e4c32f63e645ea20bdccef7e3cd427270ef43aedcadaf82789

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