Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc8c93a4790d9a8…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 01:11:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aa3ab7f689ef4714d09abdb3b8f571e9 SHA-1: 2051c4ce4f4f8c6c9c8576ff6ede3b3111187e5c SHA-256: adc8c93a4790d9a88901046ca70f8bd50479dddd3241fd5531b346e0eb0f952b
82 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a prominent external URI pointing to download sites for game-related cheats and currency. The presence of a 'password-protected archive' lure suggests that the downloaded content may be encrypted to evade initial security checks. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-free-download-laptop-game-hack
    • http://library.atim.ac.id/repository/free-minecraft-shaders_GM479516143.pdf
    • http://library.atim.ac.id/repository/become-vip-roblox-free_GM431946152.pdf
    • http://library.atim.ac.id/repository/roblox-robux-hack-tampermonkey_GM431946152.pdf
    • http://library.atim.ac.id/repository/how-do-you-get-robux-for-free-on-pc_GM431946152.pdf
    • http://library.atim.ac.id/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdf
    • http://library.atim.ac.id/repository/roblox-events-2021-robux-free_GM431946152.pdf
    • http://library.atim.ac.id/repository/coin-master-free-coins-and-spins-today_GM406889139.pdf
    • http://library.atim.ac.id/repository/pokemon-go-joystick-ios-2021-free_GM1094591345.pdf
    • http://library.atim.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://library.atim.ac.id/repository/how-to-get-free-robux-on-pc-2021_GM431946152.pdf
    • http://library.atim.ac.id/repository/generator-for-free-password-roblox_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-coin-app_GM406889139.pdf
    • http://library.atim.ac.id/repository/freer-tiktok_GM835599320.pdf
    • http://library.atim.ac.id/repository/real-free-robux-codes_GM431946152.pdf
    • http://library.atim.ac.id/repository/coin-master-game_GM406889139.pdf
    • http://library.atim.ac.id/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://library.atim.ac.id/repository/free-spins-coin-master_GM406889139.pdf
    • http://library.atim.ac.id/repository/roblox-re_GM431946152.pdf
    • http://library.atim.ac.id/repository/coin-master-spin-ml-link_GM406889139.pdf
    • http://library.atim.ac.id/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • https://www.semrush.com/prices/
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa8.bin
8d7e23d6d7c04a57ccec6eaec96d6ec28bb53897933c667eb51e16d094b1217b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA8 22168 bytes
font_01_sfnt_off000060b6.bin
85e961fc27c9f080199aa42aa9f119572bd76b86c2c8102922cd5b5c86cbae0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 19436 bytes

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