Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2832ddb6909013…

MALICIOUS

PDF

45.2 KB Created: 2021-05-11 04:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3aacf921ea9c5462a8dca623608fadb7 SHA-1: 7d9a5625f2cda5fa12593575819315774409ece3 SHA-256: bf2832ddb6909013f98952a8d02c6af50670f9f85fd97ad4e9840b18610069b9
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and a call-to-action to trick the user into clicking a link, likely to download a secondary payload or visit a malicious website. The embedded URL and numerous other URLs found in the document body all point towards lures for game cheats and hacks, suggesting a social engineering tactic. No scripts were extracted, limiting further analysis of execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/406889139/coin-master-cheats-2021-game-hack
    • https://lib.insan-unggul.ac.id/repository/minecraft-fly-hack_GM479516143.pdf
    • https://lib.insan-unggul.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/roblox-scam_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/minecraft-pe-hacks_GM479516143.pdf
    • https://lib.insan-unggul.ac.id/repository/minecraft-114-download_GM479516143.pdf
    • https://lib.insan-unggul.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdf
    • https://lib.insan-unggul.ac.id/repository/get-robux-com_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-roblox-hack_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/robux-free-online_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/earn-points-for-robux_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-robux-card-codes_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/easy-robux-hack_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/roblox-prison-life-hack_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/robux-for-kids_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/coin-master-game-hunters-club_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/get-free-spins-link-in-coin-master_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdf
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.html
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049a8.bin
44c13dfa312a4fb16ed8bf1eccd94cd28244599e7ce2f5f3f347949c16864c8c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A8 25816 bytes
font_01_sfnt_off000084b8.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B8 2840 bytes
font_02_sfnt_off00008e6a.bin
8fd2be34c5ae6d36bafabdc0d90731bcc2dba590b40522d9b75e2e7b006908cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6A 18112 bytes

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