Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a57fb148af6092…

MALICIOUS

PDF

53.0 KB Created: 2021-05-12 04:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f1d64e82695ef01012f9dc512e7b57e9 SHA-1: c95b5993db14d10cae3fadaea54ef5a77c787ef6 SHA-256: 36a57fb148af60923c66ad14af30f0520d5a9b3aa264da4d3c6a8dbc6e4679d1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document displays a fake CAPTCHA or human verification prompt to trick the user into clicking a link. This link, 'https://netcdn.xyz/app/406889139/coin-master-free-spins-daily-game-hack', likely leads to a malicious site or download. The document's content and embedded URLs suggest a lure for game cheats or hacks, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8701

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/406889139/coin-master-free-spins-daily-game-hack
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/free-robux-please_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/robux-com-roblox_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/coin-master-blogspot-links_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/today-free-spin-coin-master_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/blox-fun-info_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdf
    • http://library.fisip.upnvj.ac.id/repository/sites-to-get-free-robux_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/free-spins-coin-master-app_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-spins-link-quora_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/avatar-de-roblox_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/roblox-play-now-for-free_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/como-hackear-coin-master_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bb4.bin
14538eba2375a349a5f58ff1e3625b51f1e90781a4362d7ce949ce412a46cb81		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB4 29928 bytes
font_01_sfnt_off00008ed6.bin
1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED6 3380 bytes
font_02_sfnt_off00009aba.bin
d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABA 7332 bytes
font_03_sfnt_off0000acd3.bin
220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACD3 18308 bytes

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