Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2bb2cef5a9e708…

MALICIOUS

PDF

42.1 KB Created: 2021-04-29 02:18:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 203ae6a45200b00aad7cdccb6cb6b5e3 SHA-1: 51b7966413f7432b0e915c00a7a6dcb5dd951f52 SHA-256: 9e2bb2cef5a9e708c4c1ee8bbb9cbcac748c6ab2c37fd1aac627810afe78e4c6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a 'game hack' redirector lure. The document body, though partially garbled, also references 'how to access the studio of a Roblox game hack' and includes a suspicious URL. This suggests the document is designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

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-access-the-studio-of-a-roblox-game-hack-game-hack PDF link annotation
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-your-robux-back-without-hacking-or-buying.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/shirt-roblox-2021-free-dowload-transparent.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-free-tix-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/imperium-roblox-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/fairy-world-roblox-hack-pastebin.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-t-oget-ant-free-robux-item.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/hack-peoples-account-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/site-robux-free.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-oakley-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/cb-ro-roblox-hack.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_off000042a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42A5 26724 bytes
SHA-256: f221f18912c13d782c0ffc225248096da894bcbebdf50ba4e3245cf3866e840d
font_01_sfnt_off00008014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8014 19308 bytes
SHA-256: 7978f0bdcc377d554141484a474ffb4db46d5914d2ab911d3b5c3bf9617650cf

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