Malicious PDF — malware analysis report

Static analysis result for SHA-256 8966766e1aaf89f3…

MALICIOUS

PDF

47.0 KB Created: 2021-06-13 20:30:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9722b05065983a0311ca1124a317c698 SHA-1: 3ae654fdee277f6437e3ad0201a02b92041c2710 SHA-256: 8966766e1aaf89f334333deb9cbf51fd2999a8f8ae0a6c25c34ccbd4db3f16a1
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a download button, designed to trick the user into downloading a file from the URL http://netcdn.co/app/431946152/roblox-hack-no-virus-download-game-hack. The document body and embedded URLs suggest a lure related to game hacks or cheats, indicating a likely attempt to deliver a malicious payload. No scripts were extracted, but the presence of external URLs and the fake CAPTCHA heuristic strongly suggest a malicious intent.

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 http://netcdn.co/app/431946152/roblox-hack-no-virus-download-game-hack
    • https://repository.stikesindramayu.ac.id/repository/ways-to-get-free-robux-easy_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-java-minecraft-free_GM479516143.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-hack-roblox-with-dll-njector_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-accounts_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/roblox-hack-admin-commands-cheat-engine_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-verify_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/wurst-112_GM479516143.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-hacker-com-2021_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/hack-the-coin-master_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-earn_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-gtv-in-roblox_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-human-verification_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/get-free-robux-without-downloading-anything_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/rank-centers-roblox-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049cf.bin
208da93f9044b7b83d8b262f56022408bde1cd875812e860a608a453e5035445		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CF 24776 bytes
font_01_sfnt_off0000821a.bin
444c1a7a5f759cf8ef96265781acbb31af91c414c56e6801f4bca148dcff5b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 6796 bytes
font_02_sfnt_off000092b5.bin
9f71fe755a680a80b8fe6545d9962ffdf2d7c68f91d6245cbeb31d7192650c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92B5 19084 bytes

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