PDF malware analysis — malicious · 8438d7220c440cea

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 14:04:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c8b0bb7eb4ac339ec7a49f041e327faa SHA-1: 094fe8b82fb4c12a6228f8dafa0d609958597425 SHA-256: 8438d7220c440ceacdaf2871df71a6497b7772563df5fca2d7c34aa456eafd33

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure and a call-to-action button, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. The embedded URL https://netcdn.online/app/406889139/coin-master-hack-game-hack is likely a second-stage payload or phishing site.

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/coin-master-hack-game-hack
- https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-usa-2021_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/master-coin-free-spin-daily_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdf
- https://www.armera.co.uk/uploads/files/files/free-robux-obby_GM431946152.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-hack-ios-no-verification_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-that-really_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/games-that-give-you-free-robux_GM431946152.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-tricks-and-hacks_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-app_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/free-robux-websites-no-human-verification_GM431946152.pdf
- https://www.armera.co.uk/uploads/files/files/make-robux_GM431946152.pdf
- https://www.armera.co.uk/uploads/files/files/minecraft-client-download_GM479516143.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-link-2021_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/flip-master-coins-hack_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-daily-free-spins_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/how-to-get-free-roblox-items_GM431946152.pdf
- https://www.armera.co.uk/uploads/files/files/minecraft-pe-hack-client-ios_GM479516143.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-heaven-links_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/coin-master-2021-free-spins-link_GM406889139.pdf
- https://www.armera.co.uk/uploads/files/files/free-coins-coin-master-hack_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004eeb.bin` `47144cfd021f3efe900b5c0c17ff22863f3905336d9f7c5188ca412e7b6df69d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4EEB	24776 bytes
`font_01_sfnt_off000087e4.bin` `c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87E4	17716 bytes

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