Malicious PDF — malware analysis report

Static analysis result for SHA-256 03467f2d5e936ec7…

MALICIOUS

PDF

37.8 KB Created: 2021-07-06 13:29:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 85fdf580b3d7f1b54e20594c5fe95fed SHA-1: 7599b2bcaaef0dedefcc1533f1804032804fdff8 SHA-256: 03467f2d5e936ec7c0d5c6c71d9625e6ec7223495a608581ea645b3f83c6869a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to game-related hacks and cheats, suggesting a lure for users to download potentially malicious software. The ML classifier strongly flagged this PDF as malicious, and the presence of external URI links further supports this assessment. While no scripts were directly extracted, the document's structure and embedded links indicate a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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/479516143/minecraft-hacks-wurst-game-hack
    • http://rt9.rspo.org/ckfinder/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/roblox-dbz-super-saiyan-war-hack_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/krnl-roblox_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/roblox-adopt-me-money-hack-2021-script_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-minecraft-skins_GM479516143.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-robux-no-servery_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/games-with-free-robux_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/roblox-dupe-hack_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/coin-master-hack-download_GM406889139.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-robux-games_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/roblox-cheat-robux_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-rewards-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003165.bin
9fbce5d4592b62d07c242af2fb4cbd8a26d0de8451bddecd9644cc5c3433f246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 21972 bytes
font_01_sfnt_off000061d7.bin
6a4c6a8bb716d5784c68a8817fe27c80ea0201b5e507a09cdd5e8064225e100b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D7 4440 bytes
font_02_sfnt_off0000709d.bin
521d9e21ddb37bcf50fca8719f17a590544ab37de3ab7ae08bd463770fa05be1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709D 18364 bytes

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