PDF malware analysis — malicious · 2d8bd7f026f16122

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 09:07:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: a816d7140c836c9581127b430dcc911e SHA-1: 505f13ae7074e30a737baf343ed95ab7879e07b0 SHA-256: 2d8bd7f026f16122ad84ed60cc7b35cebfa9ef7e93261ef075c163b6655a3851

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a fake CAPTCHA lure to deceive users into downloading a payload from the embedded URL http://netcdn.co/app/431946152/ninja-legends-hack-mobile-roblox-game-hack. The document's content and numerous related URLs suggest a phishing or scam attempt, likely aiming to distribute malware disguised as game cheats or hacks. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/ninja-legends-hack-mobile-roblox-game-hack PDF link annotation
- https://www.dotnotion.com/uploaded_files/userfiles/files/roblox-counter-blox-cheat_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/auto-clicker-for-roblox-mac-free_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/roblox-hacks-undetected_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/get-400-free-robux_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/bloodborne-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/earn-free-robux-for-roblox-bux-city_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/kachifpro_GM406889139.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/robux-com-free-account_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/robux-hack-inspect-2021_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/sign-in-to-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/roblox-inspect-consle-hacks_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/cheat-pour-roblox-mac_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/how-do-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.dotnotion.com/uploaded_files/userfiles/files/free-roblox-tycoons_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003163.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3163	22444 bytes
SHA-256: `917f4d5d413c15c8d95df843de400cdd3c2b76685226f5d0a0ffdf9e71b3bd40`
`font_01_sfnt_off00006373.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6373	19336 bytes
SHA-256: `7b4be6f6bae6c7816c995cbc4849479e747dc1879d748c203514cb73b82316e9`

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