PDF malware analysis — malicious · 592a9a2a75063656

MALICIOUS

PDF

41.8 KB Created: 2021-05-19 09:06:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: b6d681041df9b38cbf587f66b4cb66e6 SHA-1: db1d2c79897243c098f83c97b63f79e1e282b926 SHA-256: 592a9a2a7506365616f11af8c726ec60b7e58f5318c48d8756985d432a1ffc99

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with a malicious link. The primary external URI points to a URL that likely hosts a second-stage payload. The ML classifier strongly flagged this PDF as malicious, supporting the observed social engineering tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/robux-game-hack
- https://jogjaindotrans.com/ckfinder/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/easy-way-to-get-robux_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/hackear-coin-master-espaol_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/claimrbx-free-robux_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-hack-tool-india_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/free-robux-legit_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/free-robux-with-no-verification_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/new-free-spins-coin-master_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/hack-coin-master-ios-download_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/roblox-account-taker_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/rbxfree-com-free-robux_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/robuxy-com-free-robux_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/my-robux_GM431946152.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/free-spin-appscoin-master_GM406889139.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/minecraft-free-app_GM479516143.pdf
- https://jogjaindotrans.com/ckfinder/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004a11.bin` `8e6ae3b586d1dca5c3fbc2c70c7a5469055e4340928dc7a047e126a064ac1592`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A11	24500 bytes
`font_01_sfnt_off00008264.bin` `ccf20ca1ad80d0cd2f0d464461636129858ae353cf2c3769b35ef20048afdef0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8264	17852 bytes

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