PDF malware analysis — malicious · 5c6ca88ece8ef276

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 16:08:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7aa16b6a672adb62b47e691bffbdce96 SHA-1: 30976abac72fa6d9bb1040492bdbfaba3eeebce9 SHA-256: 5c6ca88ece8ef276a0a2d95ab0c98cc5f359b9897c7128158c7ac5cee5f2faf7

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF document that displays a fake CAPTCHA to trick the user into interacting with it. It contains an embedded URI pointing to a URL that appears to be related to game cheats, suggesting a lure for potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.online/app/406889139/how-can-you-get-free-spins-on-coin-master-game-hack
- https://www.jcn.co.uk/uploads/files/files/worst-roblox-avatars_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/is-minecraft-education-edition-free_GM479516143.pdf
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-2021-android_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/7-year-old-roblox_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-daily_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-download-windows_GM479516143.pdf
- https://www.jcn.co.uk/uploads/files/files/roblox-font-free_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/roblox-free-robux-generator_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-download-chromebook_GM479516143.pdf
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-app_GM479516143.pdf
- https://www.jcn.co.uk/uploads/files/files/moonactive-free-spins-coin-master_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/get-free-robux-today_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/install-coin-master_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/free-pet-treats-coin-master_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/master-coin-free-link_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master_GM406889139.pdf
- https://www.jcn.co.uk/uploads/files/files/codes-to-get-free-robux_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/demon-roblox_GM431946152.pdf
- https://www.jcn.co.uk/uploads/files/files/minecraft-complete-handbook_GM479516143.pdf
- https://coinmasterspinandcoin.com
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000529a.bin` `723b53f9b7e4d9667bdfd801d4b8f2a8916b5b1a0b4a7e0e23c569b16db777bc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x529A	26064 bytes
`font_01_sfnt_off00008ccc.bin` `60b67ae9007cef9d51ba9fda79635e48158785d2310ed2ed67ffce6bba3269ad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CCC	18352 bytes

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