Malicious PDF — malware analysis report

Static analysis result for SHA-256 f533716090e5f84c…

MALICIOUS

PDF

35.3 KB Created: 2021-07-08 22:16:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7d04d49071b695c55cc8196ec9464a6a SHA-1: 6c53d48aa1c3db45ceb419e500a5d295b616375b SHA-256: f533716090e5f84cde0dfb078ea1dfdee71fe3175dcf6dfd2b44f51d1cad89ba
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that lead to pages offering game hacks and cheats, suggesting a lure for users to download potentially malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which are SEO-themed and point to game-related content, reinforcing the phishing or malware distribution intent. 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.tw/app/406889139/open-coin-master-game-hack
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-do-you-get-free-clothes-in-roblox_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/rbx-hut_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/apps-to-hack-coin-master_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-grand-blox-auto-5-lights-cheats_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-please_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-real-free-spins_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/get-coin-master-cards-free_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-hacked-client_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/faces-on-roblox-for-free_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/youtube-how-to-get-free-robux_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-headless-horseman-roblox_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-cheat-codes-builders-club_GM431946152.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-hacks-for-pet-food_GM406889139.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-windows-10-edition-free-with-java_GM479516143.pdf
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000353c.bin
e250108828866a38c63be13e0c8a0a5a0f3d0a202630cbff0ad7602c14cd0027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x353C 22760 bytes
font_01_sfnt_off000067f5.bin
01b2d26e5667a3b5a50f75626f975bd6982cd8afb945009ae254d5a27d36e96c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F5 18008 bytes

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