Malicious PDF — malware analysis report

Static analysis result for SHA-256 576ce4f7f7e31183…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 21:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fc2dab9a2443a5fa536a4073fa485e15 SHA-1: eece44dc4bbc725f0ef7a6af873e6da91ba6ff1d SHA-256: 576ce4f7f7e311835986c9d395db9ef249c9e2e7f82fcd571ae1de7e4a90a1d7
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA to lure users into clicking a malicious link, which is a common social engineering tactic. The embedded URL and numerous other similar URLs suggest a phishing or scam attempt aimed at distributing further malware or engaging in fraudulent activities. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-generator-no-human-verification-game-hack
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-hack-facebook_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-www-com_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/ro-ghoul-script_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-hack-generator_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-java-free-trial_GM479516143.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/free-spins-promo-code-for-coin-master_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-daily-free-coins-link-today_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/to-get-free-robux_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/free-redeem-code-for-coin-master_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/80-free-spins-coin-master_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-t-shirt-free_GM431946152.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/free-coin-master-cards_GM406889139.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-coins-free_GM479516143.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • https://repository.poltekkesgorontalo.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c94.bin
d8e7ef580d279102a686ae1ebc533b76ba5175ba171b11e7658272ac52635e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C94 23972 bytes
font_01_sfnt_off00008359.bin
d79baf027547f44448cd8f3b6712cdcd19f331e765a1a7a1a1aa24219739a308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8359 18772 bytes

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