Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d96a5f95ed95d76…

MALICIOUS

PDF

39.8 KB Created: 2021-04-28 19:13:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a6942fb80cc88f5597258ba5045742f3 SHA-1: a517099335fe5558de20fcdfeea484567968f771 SHA-256: 9d96a5f95ed95d7678bda153d86bfb8d420d9861df6285cc9612e5ae6557b133
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering 'free generators' and 'hacks' for the game Roblox, a common lure for malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a potentially harmful site, likely for malware download or credential harvesting.

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/urbis-roblox-cheats-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/free-knife-cbro-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-very-easy.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-headless-horseman-roblox-pastebin.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-edit-roblox-hacks.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-do-i-get-free-robux-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-roblox-accounts-v3rmillio.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/descargar-hack-de-roblox-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/new-roblox-exploit-hack-proxo.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-toffu.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-verification-2021.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_off00003f2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F2E 25372 bytes
SHA-256: dd7bfbaaf89519d5b68c21a131ee962151a5780e57f186cb426c63d581e47440
font_01_sfnt_off000078a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 18588 bytes
SHA-256: 948c24ff611662d9da8e3afbd6856580d167156639bd25fcc1f09ebe6af3e90b

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