Malicious PDF — malware analysis report

Static analysis result for SHA-256 368df2ecf88e4d34…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 18:42:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ccedfecd494e02cf529ab8971eea420a SHA-1: 93188dc00d8c3e877a52930679e898449c5d8efc SHA-256: 368df2ecf88e4d34b19ff4b2c8d8857a6ad13bcd84824d6721f66978f657566f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document and likely downloading a secondary payload. The embedded URL points to a suspicious domain, suggesting a download or redirection attempt. The ML classifier also flagged this PDF as malicious with high confidence.

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-games-with-free-radio-game-hack
    • http://digilib.stiki.ac.id/repository/free-robux-images_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/roblox-devil_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-group_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/minecraft-free-download-ipad_GM479516143.pdf
    • http://digilib.stiki.ac.id/repository/roblox-source_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/free-spin-coin-master-new-link_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/hack-coin-master-app_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-apps-that-work_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/hack-coins-in-coin-master_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/minecraft-pe-hacks_GM479516143.pdf
    • http://digilib.stiki.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/rbx-claim_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/coin-master-hack-xyz_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-on-ipad_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048de.bin
25ee0ddefde66626dd9a160fcef9db2a8f4ecc0695e45ddcbd12b1a7e07fb8bc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DE 25540 bytes
font_01_sfnt_off000082f7.bin
1d90b013fd0ba072e710b1a1c7967957ed75a631fea3266b3a2ef171103bab79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F7 19200 bytes

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