Malicious PDF — malware analysis report

Static analysis result for SHA-256 b684d519e9b92944…

MALICIOUS

PDF

42.3 KB Created: 2021-04-29 08:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e4c35f8c95e889686ad9d904f81ded58 SHA-1: c1b7582473c3e00e413961342231719f7e21cfaf SHA-256: b684d519e9b929447a5a8c84c2085cff2a26067f1f9b173ed9033353b764a42a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack lure, specifically for Roblox. The embedded URL, https://netcdn.xyz/app/431946152/roblox-developer-console-hack-2021-game-hack, is likely the initial landing page for a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious intent to redirect users to potentially harmful content.

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-developer-console-hack-2021-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/create-free-account-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-access-the-studio-of-a-roblox-game-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-real.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-do-u-hack-into-bases-on-sharpshooter-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/triga-cheat-engine-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-free-robux-otis.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/cb-ro-roblox-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-x-ray-hack-autohotkey.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/hack-roblox-vehicle-simulator-2021.pdfIn PDF document text
    • https://freerobux.cyouIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off000042b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42B8 27456 bytes
SHA-256: 124dec97819cb5ee287c90320ed4d73be31985308c52b5ff630d0da7837f44b8
font_01_sfnt_off00008144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8144 19044 bytes
SHA-256: a0470fb114dbbd98f1b5cb5ef7b8b72f2d5d9faa44e4f971f20fd3ca7403274b

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