Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c94de4639630fe9…

MALICIOUS

PDF

24.3 KB Created: 2021-06-27 19:03:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3bfc995fa3bb7c0d1b1a06170a654094 SHA-1: 368388cf756a125c01b0cbe99487de6f68dd0957 SHA-256: 7c94de4639630fe9537afd9b19881c9b53bc7dbc3c099eedbbdb2012c8c32b7a
94 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 for popular games like Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/how-to-get-faces-that-cost-robux-in-roblox-free-game-hack
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-do-you-hack-roblox_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-free-hair-boy_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-get-free-robux-linkmon99_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-naruto-final-bond-lvl-hack_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-obc-roblox-accounts-2021_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-coins-coin-master-blog_GM406889139.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-hack-in-arsenal_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-robux-generator-without-verification_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-chat-cheats_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/coinmaster-links_GM406889139.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-street-simulator-money-cheat_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-get-free-minecraft-windows-10_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003134.bin
629a895cd83f1e424a6fe548d907042d41653acfe280f6963234064675403982		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 22048 bytes

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