Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df658cb6d335012…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 04:57:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c04bc6ba6c4874221e80bf2f190185d3 SHA-1: 063682fcb6d681444492780002dfbc19a93dbfef SHA-256: 1df658cb6d33501274fdad46e673d42a7cd850c6a4b8b95d07f0c9ca11936e55
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent external URI pointing to a site offering 'Roblox40Com Robux Game Hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure and password archive instructions suggest a multi-stage attack. The document's content and heuristics indicate it's designed to trick users into downloading a payload, likely malware, by exploiting interest in game cheats.

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.tw/app/431946152/roblox40com-robux-game-hack
    • https://library.um-sorong.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/roblox-magnet-sim-hack-script-pastebin_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/how-to-get-free-shirts-on-roblox-2021-without-bc_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/coin-master-free-coins-link_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/free-robux-glitch-2021-september_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/como-tener-robux-gratis-sin-hacks-ni-servicios_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/roblox-free-roblox-no-survey_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/roblox-level-7-exploit-free-2021_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/simplysarc_GM479516143.pdf
    • https://library.um-sorong.ac.id/repository/no-robux_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/get-everything-free-roblox-console-pastebin_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/chicago-2021-free-model-roblox_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/how-to-make-roblox-not-detect-cheat-engine_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/how-to-earn-free-robux-no-password-no-email-address_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/get-robux-now_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/pastebin-robux-hack-2021_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000308b.bin
9e284f674d6ec0168693adb9169fbf890f8d6ccdd35050f82d2f112e1f2b3257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x308B 21840 bytes
font_01_sfnt_off000060cb.bin
1da81d55382e1c31fd4c6d9ed48754b7b1fca039527ac4466b5c20815f286d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 19120 bytes

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