Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf60257b49c3e132…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 14:16:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a10501c0dd6e1c7395727e86c3e1c415 SHA-1: 25c0daba0290ee7a7f444ea62faafc62ef284e63 SHA-256: cf60257b49c3e1324be6adeaf9fa0dc27a26454215e7037d5e2a2435653fe4e5
82 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA or human verification prompt to trick the user into downloading a file, presented as a free game hack. It contains an embedded URI pointing to a suspicious URL, which is likely the download source for a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

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-education-edition-free-game-hack
    • https://library.itn.ac.id/perpusitn/repository/roblox-dance-your-blox-off-cheats-to-get-points_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-village-cost_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-generator_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-robux-pass-hacker_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/minecraft-java-server-hosting-free_GM479516143.pdf
    • https://library.itn.ac.id/perpusitn/repository/cheat-codes-for-zombie-apocalypse-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-get-free-robux-without-pastibein-raw_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-pets-for-free_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/groups-with-free-robux_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/release-boku-no-roblox-remastered-hack_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/rbx-sites_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/2021-free-robux-codes_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-fencing-hack_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/sparereborn-roblox-hacks_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/hack-coin-master-2021_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-lumber-tycoon-2-hack-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-spins-and-coins-coin-master-app_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-account-roblox-login_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030a9.bin
de124a8edc650e4aab796fa687f75d7e821c31374383a32b31ad942d2d1b954f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30A9 21964 bytes
font_01_sfnt_off00006149.bin
08598633ecdc94b382a4e335ccefc5a7b6d358a9bcaaad09a03ae0d079369349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6149 18312 bytes

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