Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e404c40b3d99f16…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 06:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0bb24efe2fc3e0245bd0d15b764b6f57 SHA-1: cb58728bf6f17177ff9c56261062ea3b03aaeb41 SHA-256: 1e404c40b3d99f1675b0d9a08baacfb6e2ea9a988d18c1edabb69f64c9a8fa97
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA lure, aiming to trick the user into downloading further malicious content from external URLs. The presence of multiple URLs related to game hacks and free in-game currency suggests a phishing or scamming attempt. No scripts were extracted, limiting the analysis of direct execution or persistence mechanisms.

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/boost9-com-roblox-hack-game-hack
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download-pc_GM479516143.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-game-free-play-online_GM406889139.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master-app_GM406889139.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/www-free-robux_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-com-no-verification_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-server-hack_GM406889139.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-minecraft-mods-for-xbox-one_GM479516143.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-hacks_GM479516143.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-android_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/minecraft-creative-mode-free_GM479516143.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/free-robux-without-survey_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/robux-generator-no-human-verification_GM431946152.pdf
    • https://elearning.man1kotamadiun.sch.id/__statics/gudangsoal/files/coin-master-website_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b7c.bin
c305c0413f2e3ef430546469bd44c8fe0f8b6be2c11a9d83b5e0af8422fa5686		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7C 24732 bytes
font_01_sfnt_off00008487.bin
116e3350f892353559a46e1e2dd8dd97ba265176f89098854de85373f70222e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8487 18708 bytes

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