Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95da4e4b697d60a…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 06:41:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8b693d2feb506d0c656b1b1c4e624503 SHA-1: b5d92a996edf567d73e8de728ed48024001db774 SHA-256: e95da4e4b697d60aa1a19ed6de43a78004a138530f12512dbf18aa1ba6e00df0
82 Risk Score

Malware Insights

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

The sample is a PDF document that displays a fake CAPTCHA or human verification prompt to trick users into interacting with malicious links. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-free-spin-whatsapp-group-game-hack, is likely intended to lead to a secondary payload download. The ML classifier also strongly indicated maliciousness.

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/406889139/coin-master-free-spin-whatsapp-group-game-hack
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-gen_GM431946152.pdf
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-ps4-free_GM479516143.pdf
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/jailbreak-script_GM431946152.pdf
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-email-rewards-link_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-master_GM431946152.pdf
    • http://library.stiks-tarakanita.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdf
    • http://library.stiks-tarakanita.ac.id/repository/daily-spin-and-coin_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-education-free_GM479516143.pdf
    • http://library.stiks-tarakanita.ac.id/repository/master-coins-free_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-giveaway-live_GM431946152.pdf
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/hack-game-plus-com-coin-master_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b8c.bin
00f9f9b1d5319dd40e8a5460f888872035152150f8c9f9417fbcd127d22a02da		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B8C 24188 bytes
font_01_sfnt_off0000829c.bin
60a6361e6fc3388894d0b11e150a687c52e9f5db442fe66c80805b9ea3a4dad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x829C 18392 bytes

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