Malicious PDF — malware analysis report

Static analysis result for SHA-256 202e40f49b0ad99a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-25 19:05:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b6b5d588f06d699cb389c8b4f723d2e3 SHA-1: 54fbbf836a33c3dc10051a0e8543bf97dc241006 SHA-256: 202e40f49b0ad99a617552d50401ad6d80569919e7362b1937f686d296d2fb38
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a link farm designed to lure users into downloading potentially malicious content. The document body and embedded heuristics indicate a focus on game hacks and cheats, with numerous external links pointing to other PDF files. The ML classifier strongly flagged this PDF as malicious, and the presence of many external links suggests an attempt to distribute further malware or engage in phishing.

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/how-to-code-roblox-hacks-python-game-hack
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-hack-pc-cheat-engine_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-download-for-pc_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/reddit-robux-hack_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-coins-in-roblox_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/can-i-hack-pubg-mobile-uc_GM1330123889.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/app-master_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-spin-and-trading_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-that-actually-works_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-spins-on-coin-master_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-no-apps_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/master-coin-master-free-spin_GM406889139.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-com-hack_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdf
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f15.bin
94b5a6fa1deb0dc68992a995ace997bf1b9db11cd966f304c564da762189aad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F15 22080 bytes
font_01_sfnt_off00005fdc.bin
81e2b69aba23bcf1e8e6240fccf824432741eab95e90c700f1d39816cc4f8f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDC 19600 bytes

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