Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c30da51957b14d…

MALICIOUS

PDF

33.7 KB Created: 2021-06-30 21:38:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: adfef69beac04b8f4edf9a92122ea77f SHA-1: 7c9577fd7e30cf8195f557382739ac0cf6b6905d SHA-256: 45c30da51957b14ddfc4032570e955214c23d08f32483096650b56182947541e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are presented as hacks or cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a tactic to attract users seeking illicit advantages. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment that it is designed to lead users to potentially harmful content or downloads.

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/interfaz-de-hack-de-roblox-game-hack
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-hack-2021-inspect_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-cards-and-spin-link_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/robux-hack-2021_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-dinis-daily-roblox-shirt_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-guns-r15-script-hack_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-free-robux-with-a-fake-credit-card_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spins-link-2021-april_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-codes-to-hack_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-hack-peoples-roblox-accounts-2021_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-only-username_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-one-punch-man-unleashed-script-hack_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-someone-thinks-im-hacking_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-coin-master-coins_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-tiktok-hearts_GM835599320.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/does-roblox-give-obc-for-free_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f5d.bin
88ca5253ea926c2a5ef0e28c866d7395601381d2114957e418e9021c536cabe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5D 21496 bytes
font_01_sfnt_off00005e5a.bin
9bfa277fc72c2f99f4ab12a564a72982cb36de523a6aff0cc15390bf18de8c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5A 19008 bytes

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