Malicious PDF — malware analysis report

Static analysis result for SHA-256 3964250a2f7a777d…

MALICIOUS

PDF

41.7 KB Created: 2021-04-26 16:27:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ff2f841bd960a16330c2a088f38b3263 SHA-1: 31d0a2b80177d78532900a2f2a5feb9c2cb8ef39 SHA-256: 3964250a2f7a777dc5e91b9a215b8ad63fe1d19a655815095e3ca52670891e63
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a Roblox game hack, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate a redirection to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading malware or visiting a phishing site.

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-download-synapse-x-free-roblox-game-hack PDF link annotation
    • http://www.drent.se/images/hacking-roblox-copyright.pdfIn PDF document text
    • http://www.drent.se/images/free-clothes-roblox-2021.pdfIn PDF document text
    • http://www.drent.se/images/get-free-roblox-hats-not-patched-working-2021.pdfIn PDF document text
    • http://www.drent.se/images/free-online-games-like-roblox.pdfIn PDF document text
    • http://www.drent.se/images/robux-hack-with-inspect.pdfIn PDF document text
    • http://www.drent.se/images/how-to-hack-on-roblox-jail-break.pdfIn PDF document text
    • http://www.drent.se/images/mad-city-roblox-hack.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-robux-and-tix-on-roblox-2021.pdfIn PDF document text
    • http://www.drent.se/images/roblox-hide-and-seek-extreme-hacks.pdfIn PDF document text
    • http://www.drent.se/images/roblox-hack-week-custom-materials.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004282.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4282 25980 bytes
SHA-256: 1e831a773ae3ff62e89da2f92a6d241c58125a8d7b62c01d1cc1975ac6bd564f
font_01_sfnt_off00007f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 19036 bytes
SHA-256: 681d3976482089d96b4cd8d0ab04403975657d18ae754bc61f26b5859e585807

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