Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a67089ee07707d9…

MALICIOUS

PDF

39.8 KB Created: 2021-04-30 11:51:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7f81c4f22914457f85d691f9b8fcd963 SHA-1: a17092d3c52ea082b5063d8b0e8318faad7ddcd9 SHA-256: 0a67089ee07707d9c4721148a8d7c8b4f54e58b26f6417b94cf522a5cdbde847
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure the user into clicking on a URL promising game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-cheat-tables-game-hack, which is likely a landing page for malware or a phishing site. The document body and heuristics indicate a social engineering tactic to trick users into visiting a potentially harmful external resource.

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-cheat-tables-game-hack PDF link annotation
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/roblox-shirt-creator-free-shipping.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/free-roblox-for-roblox.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/how-to-hack-roblox-for-free-robux-2021.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/how-to-get-free-robux-method.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/how-to-get-free-bc-in-roblox-pastebin.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/roblox-hack-script-admin.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/shirt-ash-on-roblox-free-on-shirt.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/hack-slash-roblox-id.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/gamekit-robux-for-free.pdfIn PDF document text
    • https://www.regaloscabalgatas.es/ckfinder/userfiles/files/roblox-free-play-no-download-unblocked.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_off00004032.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4032 24888 bytes
SHA-256: a039e357f4bcb77338f6127bb6d2f27d48f8b50b13d5f53ab47c96f302e53412
font_01_sfnt_off000079ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BA 18280 bytes
SHA-256: 3e0b3484a29ac5849cafe3ececb38783d066477ac660de073f2142a6b3156f1f

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