Malicious PDF — malware analysis report

Static analysis result for SHA-256 5473da0644fd2747…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 02:23:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bce468dbbb0e4e6578ca8dc14ff76188 SHA-1: c9601525d9108d6edd75965ed70993161d2d41c6 SHA-256: 5473da0644fd2747a0bd8275c8a85b8fc08e56fa214a25ba6dcf6a8b47c51b5b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a fake CAPTCHA lure designed to trick users into downloading malicious files, as indicated by the 'SE_FAKE_CAPTCHA' heuristic. The document body and extracted URLs promote game hacks and cheats, suggesting a social engineering tactic to deliver malware. No scripts were extracted from this sample, but the presence of external URIs and the ML classifier's high confidence score support the malicious verdict.

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-java-free-download-game-hack
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/how-to-fly-hack-in-roblox-phantom-forces-2021_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/pokemon-go-free-pokecoins_GM1094591345.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/free-robux-redeem-codes_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/best-roblox-hacks_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/roblox-free-download-meepcity_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/free-robux-no-human-verification-2021-ipad_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/free-multiplayer-minecraft-server_GM479516143.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/roblox-hack-how-to-get-unlimited-robux_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/coin-master-spin-hack-no-verification_GM406889139.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/roblox-hack-de-robux_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/get-free-spins-link-in-coin-master_GM406889139.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/how-do-you-hack-roblox-accounts-2021_GM431946152.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/minecraft-pe-apk_GM479516143.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/free-spins-and-coins-coin-master-links_GM406889139.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/wurst-hacked-client_GM479516143.pdf
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/coin-master-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032f5.bin
17727f94bc3140692ace2d7f3439b27171d60e35587dfc7aad53e18b27865f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32F5 22448 bytes
font_01_sfnt_off000064df.bin
b0096c3c5e481a4f2c1c49fcffa9b92b3b8114a7f846d47264883f0ea9db8c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64DF 18856 bytes

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