Malicious PDF — malware analysis report

Static analysis result for SHA-256 12eec1860285ad0b…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 16:27:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b308840e1f4cdf5e3a4c393d1ff310ef SHA-1: 7e0c052671ed970dfc0a34a34b5dabbe86e6b736 SHA-256: 12eec1860285ad0b10bff7174ee1d6579437df27e1c523d41baa50c4e94d0ab9
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats, such as 'Robux Hack Me'. The presence of a 'PDF_SEO_LINK_FARM' heuristic indicates a large number of these links, suggesting a malicious intent to direct users to potentially harmful content or downloads. The ML classifier also strongly flagged this PDF as malicious.

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/robux-hack-me-game-hack
    • http://lib.fekon.untad.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-on-mobile_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/minecraft-pocket-apk_GM479516143.pdf
    • http://lib.fekon.untad.ac.id/repository/free-place-roblox-download_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/easy-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-mod-apk-download_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-into-anyones-roblox-account-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-engine-noclip-2021-august_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-bugatti-in-roblox-jailbreak_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-hacks-commands_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/como-hack-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/anti-afk-hack-roblox_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/apps-that-can-hack-roblox_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/funbloxxyz-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_off000031fa.bin
e9cf51d82bdfa64cf2361cc94f94ae8c22c47e46837ed0fd26e3047ea02c40cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 22632 bytes
font_01_sfnt_off00006475.bin
d49e1575892b00f4a4e8cdcd45bcc6284cddefc71d3a5758140a1c9b54c8cd26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6475 18916 bytes

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