Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75981666ce68cf7…

MALICIOUS

PDF

36.2 KB Created: 2021-06-29 06:27:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9c0a475a58d493174ef208751d2932c0 SHA-1: 4a7e1fe1abdd4f5e89311fd3019cbdddce615dc6 SHA-256: e75981666ce68cf7f8bf1e2542a8c7f20f569764233e7746a256128af4fd0e7c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous external links, many of which are presented as download pages for game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' lure reinforces the deceptive nature of the document. The primary goal appears to be directing users to download potentially harmful files from the listed URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/descargar-hack-para-roblox-game-hack
    • http://perpustakaan.pa-jember.go.id/repository/assassin-roblox-hack-script_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/robux-com-free-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/unjailbreak-hack-roblox-descargar_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-spins-on-coin-master-cheat_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/links-for-free-spins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/games-that-give-free-robux_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/roblox-super-power-training-simulator-killing-intent-cheat_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-card-codes-2021_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-roblox-accounts-that-work_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-hack-really-works_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-no-downloading-apps_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-codes-9-3-19_GM431946152.pdf
    • http://perpustakaan.pa-jember.go.id/repository/roblox-hacker-john-20-000-robux-gems-jarvascript-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003505.bin
4f59cdad340ddcb312f78c3bd3fa4fa83d6f8cef265cadbc61c01e65b9d36bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3505 23432 bytes
font_01_sfnt_off000068a8.bin
f2390a288712422b6b1734fcb6552e5767a4a34bc68437141bb77c58887b9665		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A8 18980 bytes

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