Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be3eaa460640c0e…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 17:19:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c194900073f231c86e5ce049504e6c93 SHA-1: 6b1e78864108eb671de136dfd362f1cbe5554440 SHA-256: 9be3eaa460640c0e3874ca2cf1f06c2368112b7e893db29a2738ed13f4fe132e
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a link, which is a common social engineering tactic. The embedded URL points to a resource that likely serves as a lure for downloading further malicious content. No scripts were extracted, but the presence of a fake CAPTCHA and external links strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/minecraft-nintendo-switch-digital-code-free-game-hack
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/boost9-com-roblox-hack_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/coin-master-cheats-free_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/how-to-get-free-robux-com_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/roblox-robux-free-2021_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-hacks-and-cheats_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/free-robux-script_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-hack-download_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/download-coin-master-hack-tool-v1-9_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/descargar-coin-master-hack_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-hack-pc-free_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/roblox-payment-exe-download-free_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-spin-hack-pc_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-free-spins-facebook_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/robux-hack-2021_GM431946152.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/free-robux-no-human-verify-or-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000319e.bin
5f9d468dc42b0a3a90e04ffa8ee740bf42b88156991b5be66fa211ba4e16a23c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x319E 22328 bytes
font_01_sfnt_off000062f9.bin
39428c206c609bf194df99e48b3a05aaca79100e1a0a860ab3e065a57b3738de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F9 18744 bytes

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