Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ae017932cebff8…

MALICIOUS

PDF

37.9 KB Created: 2021-06-28 06:16:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 070fb1d8afcafb5f59e3eabe1217de38 SHA-1: bfe689034e0c0b2137dbf41cea9e243144046f3f SHA-256: 10ae017932cebff8441b74be17b1d26d270704628e533aa2350ae73c0ce972dc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links pointing to game hacks and cheats. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. The document's primary function appears to be acting as a link farm for malicious or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/clover-online-hack-roblox-game-hack
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-pet-food-links_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/hack-coin-master-using-pc_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-free-stuff-in-roblox-august-2021_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/best-free-robux-sites_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-robux-generator_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/hack-para-coin-master-singapore_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/wie-kann-man-ein-hacker-sein-bei-roblox_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-roblox-generator-club_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/pubg-uc-kharidna-hai_GM1330123889.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/minecraft-tower-defense-2-hacked_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/game-test-roblox-free-bc_GM431946152.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/minecraft-jar-free_GM479516143.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://e-pustaka.stkipadzkia.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c54.bin
6729e3a454b0c1a0dfbac01c92c0fcfe4ea2b3044f2618b68d92a83bda1a67b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C54 23004 bytes
font_01_sfnt_off00006ff0.bin
2d371921378f34a75213fbca113a84f00ddfccd07c58f7a778e84632ca0d434a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 18892 bytes

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