Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bea29eaed68dd4…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 08:39:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fa894450b9a9904060add3abb2cf54c1 SHA-1: 9a394548f290edea3a94da9b4d2fb875fa5e203c SHA-256: 56bea29eaed68dd4e3c9d7e5794315cd66fcbc3cc34ccfaa5e79dff9459473df
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 the user into downloading a file. The document body and heuristics indicate a lure related to game hacks, specifically mentioning 'minecraft-wurst-client-game-hack'. An external URI pointing to 'http://netcdn.tw/app/479516143/minecraft-wurst-client-game-hack' was extracted, which is likely the payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/minecraft-wurst-client-game-hack
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/pokemon-go-free-trade-evolve_GM1094591345.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/are-there-any-roblox-games-that-have-a-free-radio_GM431946152.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/robux-online_GM431946152.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/play-minecraft-for-free-on-pc_GM479516143.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-apk-mod_GM406889139.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/hack-naruto-final-bonds-roblox_GM431946152.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/free-rare-cards-for-coin-master_GM406889139.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/roblox-bloxburg-for-free_GM431946152.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-minecraft-java-edition_GM479516143.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-shirt-templates-roblox_GM431946152.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/roblox-hack-client_GM431946152.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/mcpe-master-coin-hack-apk_GM406889139.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-hack-uk_GM406889139.pdf
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdf
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000321e.bin
5058188ae7094a8d1b130235a34c287eedb3f1f3e289c75636fc597c0dc14db3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x321E 23196 bytes
font_01_sfnt_off0000660e.bin
a323418619f7d32fd4e4ef40c54796fe1870c8822cb92cf9efac8b7e56bd9a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660E 18268 bytes

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