Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9afbcaba0a8804…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 20:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 224a23f7d472128749abb8406d465ee5 SHA-1: 18ebf3da4e90257cc3a43523b617154e88bb4f55 SHA-256: 3c9afbcaba0a8804aaada863287b52335951eb8c6f09319aeb74f90812229efe
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which are structured as SEO-friendly slugs pointing to game-related hacks and free currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly flagged this PDF as malicious. The document body itself contains text and URLs related to 'Robux' and 'Coin Master' hacks, suggesting a lure to phishing or malware distribution 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/what-is-a-robux-game-hack
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/ban-hack-roblox-moi_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-facebook-free-spins_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-exploit-roblox_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/free-roblox-account-older-than-30-days_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/apps-to-get-minecraft-for-free_GM479516143.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/free-roblox-books_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/roblox-free-hair-girl_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-get-anything-in-the-catalog-for-free-roblox_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-today_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/oprewards-com-login_GM431946152.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdf
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/minecraft-pc-download-free-full-version_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f34.bin
4c3b081a4c75d56929a198ab78a53a23f8e07f923d84aca73428987ce400871c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F34 22284 bytes
font_01_sfnt_off00006108.bin
c4929e2cccccb6c645c3e246f213aba1e3fbbbd784ea000777d464120741ffc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 19020 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.