Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ea513e10140cb5…

MALICIOUS

PDF

44.1 KB Created: 2021-06-04 03:12:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cc85f17b7becba804814693d0201fb2c SHA-1: 918656192a24e6ff15a8fe504cdc122b02e1c571 SHA-256: 65ea513e10140cb508ed6a8ca304f8751db63a70643802c067b820149d3047ae
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into downloading a secondary payload from the embedded URL. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded URLs suggest a lure related to game hacks or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/roblox-hack-com-game-hack
    • http://perpustakaan.pa-jember.go.id/repository/roblox-ban_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-sites-2021_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-download_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-cheat-codes-for-coin-master_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-link_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-100-spin_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-minecraft-java-server_GM479516143.pdf
    • http://perpustakaan.pa-jember.go.id/repository/roblox-hack-client_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/rbx-land-free-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coinmasterfreespinlink_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-get-free-robux-easy_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-do-we-get-free-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdf
    • http://perpustakaan.pa-jember.go.id/repository/roblox-fun-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-coin-master-spins-2021_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/10-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/working-coin-master-hack-2021_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005257.bin
e0cdf6919b2df7d1af86d3318c64f021feb09bb38ed2d028cb2db6f6b81a8f13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5257 24148 bytes
font_01_sfnt_off0000895f.bin
92e56247950081f5f8ea935637ec6d93dafa31aa334148af106ab9a8365bd2e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x895F 18440 bytes

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