Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ce0e24655d615e…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 08:31:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a2421a914328dbdf364877f5fb37c96 SHA-1: d7c6cd7a609c060030c587002131704114d43388 SHA-256: f2ce0e24655d615e95019a257eb1302d4a6ecfe3d1c72123bd4949552da5ff3b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that lead to websites promising free in-game items or currency. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a social engineering attack designed to redirect users to potentially malicious sites.

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/earnrobux-game-hack
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-studio-hack-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-any-face-free-on-mac-roblox_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-free-hats-obby_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-ultimate-driving-westover-islands-hack_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/cheat-roblox-lumber-tycoon-2-2021_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/get-anything-free-on-roblox_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-hack-on-roblox-on-skywars_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-badges-roblox-game_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-500-spins-link_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-robux-no-human-verification-or-download_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-build-a-boat-for-treasure-venom-cheats_GM431946152.pdf
    • http://katalog.iain-padangsidimpuan.ac.id/repository/what-is-the-april-1st-stickmasterluke-hack-face-roblox-called_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030bd.bin
7c033a057c748646fce2c0baa9fbe0fa710d79081f6be653adaf281d14581dd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD 22244 bytes
font_01_sfnt_off0000623e.bin
6794fc7ee49cdd0a33f98bbbc8a763353555002210e507bd98e2a39f67d6f290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 18552 bytes

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