Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f365ffdb48fd13d…

MALICIOUS

PDF

33.9 KB Created: 2021-06-29 13:48:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c327dc016f1e04cc671e2b77f9be2079 SHA-1: acf5c908ed6eca269586921323294f994132415f SHA-256: 9f365ffdb48fd13de31a51c01237b70bde8828139a70fd0793969ce5a98fb581
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with a primary external URI pointing to a site offering game hacks. The presence of a 'Password-protected archive handoff' heuristic suggests the document may be designed to trick users into downloading an encrypted payload, which is then accompanied by password instructions to bypass security scanning. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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/buy-hacks-for-roblox-game-hack
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-items_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-level-7-exploiter-crrake_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-admin-lua-script-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-clothes_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/download-roblox-robux-hack-tool_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-cheat-in-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-free-online-games_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/give-me-free-robux-on-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-daily-spins-today_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-daily_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-pin_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/robux-now_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hack-2021-android_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-can-you-get-minecraft-for-free_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f1e.bin
cdb6a2109752eabaaeb091574928d2900cf39f1e15eb5a54041ffa2fe2333cee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1E 21860 bytes
font_01_sfnt_off00005f4c.bin
a416d7bd861931bcd597bc33d5338628e4b366216f38625d0bab0341d591d5db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4C 19140 bytes

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