PDF malware analysis — malicious · 051951f6bdcd8ebd

MALICIOUS

PDF

49.4 KB Created: 2021-05-11 18:33:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: cb231510c37c266fcd6d664b938d1b3d SHA-1: b89c4af02f666259f3e6533bcd0b791ba37f7cf4 SHA-256: 051951f6bdcd8ebd0164470db14f89f2afb0573bc554b4f86c791bb50076a63d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document presents a fake CAPTCHA lure, aiming to trick the user into downloading further malicious content. It contains numerous URLs pointing to potential game cheat or currency generator sites, which are commonly used to distribute malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an intent to lead the user to download a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

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-generator-com-roblox-hack-game-hack
- http://slim.sisminkada.net/repository/easy-robux-today-com_GM431946152.pdf
- http://slim.sisminkada.net/repository/how-to-get-2021-robux-for-free_GM431946152.pdf
- http://slim.sisminkada.net/repository/roblox-free-accessories_GM431946152.pdf
- http://slim.sisminkada.net/repository/latest-coin-master-free-spins-link_GM406889139.pdf
- http://slim.sisminkada.net/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdf
- http://slim.sisminkada.net/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
- http://slim.sisminkada.net/repository/minecraft-114-download_GM479516143.pdf
- http://slim.sisminkada.net/repository/free-coins-and-spins-in-coin-master_GM406889139.pdf
- http://slim.sisminkada.net/repository/hack-coin-master-xyz_GM406889139.pdf
- http://slim.sisminkada.net/repository/how-to-buy-robux-for-free_GM431946152.pdf
- http://slim.sisminkada.net/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdf
- http://slim.sisminkada.net/repository/free-draw-2-roblox_GM431946152.pdf
- http://slim.sisminkada.net/repository/when-was-minecraft-free_GM479516143.pdf
- http://slim.sisminkada.net/repository/free-robux-hack-no-human-verification_GM431946152.pdf
- http://slim.sisminkada.net/repository/codes-to-get-free-robux_GM431946152.pdf
- http://slim.sisminkada.net/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdf
- http://slim.sisminkada.net/repository/actual-free-robux_GM431946152.pdf
- http://slim.sisminkada.net/repository/free-robux-sites-2021_GM431946152.pdf
- http://slim.sisminkada.net/repository/arsenal-hacks-roblox_GM431946152.pdf
- http://slim.sisminkada.net/repository/robux-matchcomfree-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004ddd.bin` `1a7f79b53c2021efc7f46980772df3cca6293ad9d0fbfd7d79f986109b5240cd`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4DDD	37036 bytes
`font_01_sfnt_off00009de2.bin` `4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9DE2	18852 bytes

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