Malicious PDF — malware analysis report

Static analysis result for SHA-256 af54fc64abefa892…

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 04:58:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 83fe434affdf4f622a7e12dcdceeb8f4 SHA-1: c88f1f49950f46c6cfeead13073b07b5b41de506 SHA-256: af54fc64abefa892d50c4b01a576bd0f035f696f2f5f10b0c25889404f741ad0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded URLs that form a link farm, likely intended to direct users to malicious websites for downloading unwanted software or engaging in scams. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent. The document's content and structure suggest it is designed to exploit user interest in game-related cheats and currency.

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.co/app/431946152/top-free-commands-in-roblox-which-works-in-all-games-game-hack
    • http://sdn4-wates.sch.id/akasia/repository/e-free-in-roblox_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/how-o-get-free-robux-new_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hack-mod-game-download_GM406889139.pdf
    • http://sdn4-wates.sch.id/akasia/repository/gamehunters-club-coin-master_GM406889139.pdf
    • http://sdn4-wates.sch.id/akasia/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdf
    • http://sdn4-wates.sch.id/akasia/repository/secure-payment-with-roblox-free_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-roblox-codes-for-clothes_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-games_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/script-hack-roblox-legend-of-speed_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/como-tener-anti-gravedad-en-roblox-hack-check-crashed_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-animation-roblox-2021_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/how-to-make-a-shirt-free-on-roblox_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/how-tto-get-free-robux_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdf
    • http://sdn4-wates.sch.id/akasia/repository/get-free-hat-in-roblox_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-website-2021_GM431946152.pdf
    • http://sdn4-wates.sch.id/akasia/repository/minecraft-creative-mode-free_GM479516143.pdf
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003186.bin
54cd1ffa019b3b50b5d664f3f587cc0e92679d5da8e0d07d90546e39c81ae52b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3186 22636 bytes
font_01_sfnt_off00006418.bin
5b27d6c711d41947c131d1b2360993789a3b04978788daf1e60c670cc5f8bf16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6418 19912 bytes

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