Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b932d0c6f1c2ef…

MALICIOUS

PDF

47.2 KB Created: 2021-05-14 01:38:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 04b79a6eb5b49ecb5260e762d1033da8 SHA-1: 6c6b85273c02e04cc343667d851514c87714b0f1 SHA-256: 60b932d0c6f1c2ef1c3822286c1eec26386b413520c90c7f851c67e1a8aa6223
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for "free Robux" and displays a fake CAPTCHA to trick users into clicking a malicious link. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-codes-no-human-verification-game-hack, likely leads to a second-stage payload or phishing page. The document's structure and content strongly suggest a social engineering attack aimed at users seeking in-game currency.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/scaffold-minecraft-hack_GM479516143.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/monttechscom-coin-master-free-spins_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-mast-hacks_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-2021-march_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-link-blogspot_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-skins-in-minecraft_GM479516143.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-cheats-free_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/como-hackear-juego-coin-master_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/roblox-hack-game_GM431946152.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/getrobux-come_GM431946152.pdf
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-spin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b72.bin
105f8b7bd7710da404bcbce87785ef74c0952b8fd05c2a3fd81db2b5ef6c9eb1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B72 27364 bytes
font_01_sfnt_off000089c0.bin
f2ef90dc1d4b7d566a925914dce80e1208cabb088f8379c7ecbf722370c5b14a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 2872 bytes
font_02_sfnt_off0000939d.bin
7535c842b13f5ab09a8d1f6df205e44a1f60a7fdf3d88b4466f5e7b4ed5bfe6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x939D 19032 bytes

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