Malicious PDF — malware analysis report

Static analysis result for SHA-256 140263df5e0f2ff9…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 14:10:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5ff6882b33a780dadbb8eeecdc78adc6 SHA-1: 26e10a24cd89d63aaa34de085d065fd6a1e7d55c SHA-256: 140263df5e0f2ff987b26b584889d7e20901a64a08a4a03abf4fb46046399cbe
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized pages offering "free game hacks" and "free Robux". The primary URL, http://netcdn.tw/app/406889139/install-free-game-coin-master-game-hack, suggests a download lure. The presence of a "Visual download / call-to-action button lure" heuristic further supports this, indicating the document is designed to trick users into downloading malicious content.

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/406889139/install-free-game-coin-master-game-hack
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/iroblox-club-free-robux_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/roblox-gift-card-free-codes_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/10m-free-robux_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-get-free-cloathes-in-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-have-bcc-in-roblox-free_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-coin-master-spin-daily-link_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/cheat-engine-speed-hack-roblox-2021_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/roblox-game-play-online-for-free_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/exploit-for-anti-hack-games-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/add-robux-hack_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/who-did-tje-hackers-hack-in-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-group-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/coin-master-in-app-purchase-hack_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/como-hackear-coin-master_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-roblox-cbro-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003205.bin
0e7e0f5658efffe214b8cfd9d7ffe1352ccc53362dd5916181fee773ccfbced6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3205 22756 bytes
font_01_sfnt_off000064e6.bin
d212333c85aa31425f07fcb274d9f5b35260b329917ccb36e51ab60c49de7971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E6 18332 bytes

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