Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10324eebb11c132…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 06:20:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fb1142e1870a9ecb929b0cd3c19d7e0f SHA-1: da58d753c1845306c681e14905eeea64026928f2 SHA-256: c10324eebb11c132fb69fb5f3146f1a3ccb146524d7f95356205065b3a2b0aa0
82 Risk Score

Malware Insights

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

The document presents itself as a lure for game cheats and hacks, specifically mentioning Roblox and Coin Master. It contains a prominent link to 'netcdn.co' which is likely the initial download or redirection point. The heuristic 'SE_FAKE_CAPTCHA' indicates the user will be presented with a fake verification prompt, a common tactic to trick users into executing further malicious actions or downloading payloads. No scripts were extracted, but the embedded URLs and fake CAPTCHA heuristic strongly suggest a social engineering attack aimed at malware delivery.

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.co/app/431946152/roblox-cheats-proxy-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/but-link-says-free-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/insta-kill-hack-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-ga_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coinmaster-hack_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spin-today_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/como-tener-robux-gratis-en-roblox-2021-enero-nuevo-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/apps-to-get-free-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-omg_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/rbx-place-free-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-games-free-download_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spin-app-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-minecraft-shaders_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/androeed-ru-minecraft_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-400-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb1.bin
d8609849497499f5392f8652131bb9afe6a60e0dab97cb6cb58d569005f7022c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB1 22360 bytes
font_01_sfnt_off0000615b.bin
0ce9db5993b57df3ddadf2c148059b08d8df2ac4687105da6c5f0057f61a65df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615B 19088 bytes

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