Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7b9c69246949b5…

MALICIOUS

PDF

47.7 KB Created: 2021-05-12 13:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 765b40775b849a7cbe3f4e6c57f865c9 SHA-1: 21591064237b193118810655ff2ac1a033175449 SHA-256: 2f7b9c69246949b514d95a67f2058dcfe1c972144f8945c4bccf4430e8581f09
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a heuristic firing indicating it's a lure for game hacks and free Robux. The primary URL, https://netcdn.xyz/app/431946152/free-robux-codes-no-human-verification-game-hack, is likely the initial destination for a phishing or malware download attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/free-robux-codes-no-human-verification-game-hack PDF link annotation
    • http://oca.undil.tl/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B89 25956 bytes
SHA-256: e469afe3a5e481e1d9a6eb7ca6c4f17900a44245cd2b78631a1cc5f5a924f625
font_01_sfnt_off000088e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E5 3936 bytes
SHA-256: 9853ca89115022285623111534c9ddc4f1dd062ee785b99bc0edec496de21ae2
font_02_sfnt_off000095ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95CE 19032 bytes
SHA-256: 7535c842b13f5ab09a8d1f6df205e44a1f60a7fdf3d88b4466f5e7b4ed5bfe6e

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