Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef43495c79e63a5…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 11:09:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e7a41249fc47aaf15a84b70129c42da9 SHA-1: f64ecac336194495b64b1b32d01225e52e39ca52 SHA-256: fef43495c79e63a5fb1673e795bd4a8398c9b386f64d7c8184cdec35a330494c
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a call-to-action phrase, strongly suggesting a lure to download potentially malicious content such as game hacks. The ML classifier also flagged this PDF as malicious with high confidence. The document body and heuristics indicate a focus on 'Roblox' and 'Coin Master' cheats, directing users to external URLs for 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.tw/app/431946152/synapse-roblox-free-download-game-hack
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-google_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-roblox-robux-no-human-verification_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-install-roblox_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-spin-bonus_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-roblox-exploiting_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/hack-sex-roblox_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-land-free-robux_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-hack-roblox-games-on-mobile_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-hack-filter-games-roblox_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/elsaiyan-roblox-hack_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/roblox-hack-online-cheats-tool_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-vip-servers-for-roblox-jailbreak-2021_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/notoriety-roblox-shadow-raid-secret-cheat_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000326a.bin
9b7ba6656403210dd9cb0308d20b7479ba9337d1378ab27927a05fe04bf3da95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x326A 22708 bytes
font_01_sfnt_off000064f2.bin
7da73edf140496b7de741247622447fc01b10910c59fc7d44162edb3e0c91153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 19512 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.