Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1aec6f46ded148…

MALICIOUS

PDF

49.9 KB Created: 2021-05-10 16:06:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b67a05b176f101df9743b156ba5df360 SHA-1: ff2ba54ad6c7c77f9628c52e84b009a2e8c32173 SHA-256: ae1aec6f46ded1484530d5a4b9b2ca8dc8a2ea0760bcaf69078d376fdea53125
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The document body and embedded links promote 'how to hack Roblox' and related topics, directing users to external URLs that likely host further malicious content or downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/how-to-hack-roblox-2021-game-hack
    • http://elibrary.fl.unud.ac.id/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdf
    • http://elibrary.fl.unud.ac.id/repository/earn-robux-for-roblox_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/rbl-gg-free-robux_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/2021-roblox_GM431946152.pdf
    • http://www.elibrary.fl.unud.ac.id/repository/master-coin-hack-mod_GM406889139.pdf
    • http://www.elibrary.fl.unud.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/roblox-c9m_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/actual-free-robux_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://elibrary.fl.unud.ac.id/repository/coin-master-get-free-spins_GM406889139.pdf
    • http://elibrary.fl.unud.ac.id/repository/robux-cheat_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/free-roblox-premium_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdf
    • http://elibrary.fl.unud.ac.id/repository/coin-master-cheat-free_GM406889139.pdf
    • http://www.elibrary.fl.unud.ac.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdf
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdf
    • http://www.elibrary.fl.unud.ac.id/repository/free-roblox-premium_GM431946152.pdf
    • http://elibrary.fl.unud.ac.id/repository/links-to-free-spins-on-coin-master_GM406889139.pdf
    • http://elibrary.fl.unud.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-live_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ac1.bin
6e21d59a153089a8d8b8fc6dde95b79f99a0232fb34ddde14a3d8ccbb695a623		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC1 25092 bytes
font_01_sfnt_off000084db.bin
66069ec67edbfe7ecc4994b9f7e2bb7cf953956330396f813e33a4bef4c2e3c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DB 4124 bytes
font_02_sfnt_off000092c3.bin
e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 3396 bytes
font_03_sfnt_off00009eb6.bin
82830e686af2a9787477f8716b243dfdc4e826425849e85a18f820c98dc205f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB6 18748 bytes

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