Malicious PDF — malware analysis report

Static analysis result for SHA-256 949669cc4eb816d1…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 20:47:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8a53828054d22f67db208039d9c315ce SHA-1: a3bb25787ba218d278a35cfa92a91a89271a88be SHA-256: 949669cc4eb816d19b96c00a3aa0009a9ad90e2a5e39c5e31a746ba8ed1a25af
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded URLs and a 'Robux Cheat' theme in its body, strongly suggesting a lure for users seeking game exploits. The presence of a large number of external links, many pointing to PDF files with similar themes, indicates a link farm designed to attract traffic. The ML classifier also flagged this PDF as malicious with high confidence.

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/robux-cheat-game-hack
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/como-conseguir-robux-gratis-sin-hacks-con-dos-links_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-robux-hack-on-computer_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-free-roblox-without-verification_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-use-cheat-engine-66-on-roblox-2021_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-roblox-fan-clubs_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-make-free-robux_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/minecraft-pe-free-download_GM479516143.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-hack-dumb-brothers-roblox-accounts-easy_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/village-3-coin-master_GM406889139.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-coloring-pages-free_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-characters-with-free-items_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/wurst-18_GM479516143.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-free-roblox_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-do-u-hack-roblox_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-hack-download-2021_GM406889139.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000326f.bin
883d359c4ad1727f3be5842c4c818f8818fd532de5db18fc40b97a0fc4f660dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x326F 22268 bytes
font_01_sfnt_off0000641b.bin
37f2cbed7862a525c1327ce05c27341cf40a6b7f3d64c9c700a10f02169ccde8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641B 18820 bytes

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