PDF malware analysis — malicious · ae1f4f3cc36d51e2

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 11:13:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 853bb69554f08da98fd86b12b1096ad3 SHA-1: 9d59f6c601536c730365b4e9c721a3e6b5efd168 SHA-256: ae1f4f3cc36d51e2a1d3dd57ce5f5727081a4918b8e99c00a52bd79324911da3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or verification prompt to trick the user into interacting with a malicious link. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-picture-game-hack, is likely the destination for this lure. The ML classifier also strongly indicated maliciousness.

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/free-robux-picture-game-hack
- https://www.alloywheels.in/uploaded_files/userfiles/files/easy-robux_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/roblox-rewards-site_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/fbchampion_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/minecraft-mod-menu_GM479516143.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-fan-page-facebook_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/roblox-fun-com-robux_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/get-free-robux_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/grabpoints-robux_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/robux-xyz_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/earn-points-for-robux_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spin-27_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-game-hack-app-download_GM406889139.pdf
- https://www.alloywheels.in/uploaded_files/userfiles/files/free-spin-coin-master-link-today_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_off00004859.bin` `5cfc877ef216e3a46b82ab164f54d5844cc050edc64aa5fb7a9a8843d99a3354`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4859	25372 bytes
`font_01_sfnt_off00008305.bin` `34b0e3a58c66b2af54b16d5c8d734c4555ce81663a4a6734022a64244545498a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8305	18392 bytes

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