PDF malware analysis — malicious · 2143c8d67e3d796b

MALICIOUS

PDF

46.2 KB Created: 2021-05-17 12:34:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3a4079327eef9dbeafe18356e592528b SHA-1: 098d88a8421d02b6a1ebfe7d04d29ca288392bcb SHA-256: 2143c8d67e3d796b9b0d195e2372b39c1655a1ad2c63983b137996202f09d9d0

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a link. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-no-verification-needed-game-hack, likely leads to a malicious payload download. The document body and numerous other URLs suggest a lure related to free in-game currency or items.

Machine Learning

Nyx PDF Classifier malicious score 0.9278

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-no-verification-needed-game-hack
- http://rollipolli.hu/userfiles/files/cm-free-spins_GM406889139.pdf
- http://rollipolli.hu/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
- http://rollipolli.hu/userfiles/files/coin-master-free-spin-daily-bonus_GM406889139.pdf
- http://rollipolli.hu/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/how-do-you-get-free-robux_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/how-to-win-free-robux_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/free-coin-master-game_GM406889139.pdf
- http://rollipolli.hu/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/como-hack-coin-master_GM406889139.pdf
- http://rollipolli.hu/userfiles/files/free-robux-app-real_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/free-pe_GM479516143.pdf
- http://rollipolli.hu/userfiles/files/roblox-free-robux_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/ways-to-get-free-robux_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/where-to-get-free-robux_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/flip-master-free-coins_GM406889139.pdf
- http://rollipolli.hu/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/robux-hack-2021_GM431946152.pdf
- http://rollipolli.hu/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b08.bin` `952c523b1986ab7c695f8c8e2c39c8255b7a63b6ed4f6a668fa557f7ff1f4502`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B08	26620 bytes
`font_01_sfnt_off000086f0.bin` `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86F0	2840 bytes
`font_02_sfnt_off000090a2.bin` `d142001b9e8124b93d34dd5eb493ac1502906b177ba9fa7077e4038994baf40d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90A2	18776 bytes

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