PDF malware analysis — malicious · c17f450f7313dfbe

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 17:20:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 12e417fcae5093081511cebc0c0938d7 SHA-1: 6c3af1f78812b066d4f45bc78865adc092b2cd71 SHA-256: c17f450f7313dfbed243b5c6343f49ecb9ce84ba24872149c174ae4141b2e48b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, aiming to trick the user into interacting with a malicious link. The embedded URL, http://netcdn.co/app/431946152/how-to-hack-on-xbox-one-roblox-game-hack, likely leads to a second-stage download. The ML classifier also flagged this PDF as malicious with high confidence.

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/how-to-hack-on-xbox-one-roblox-game-hack
- https://www.vadai.sg/uploaded_files/userfiles/files/websites-that-give-free-robux_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-robux_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/how-to-hack-roblox-games-2021_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/minecraft-bedrock-free-download-pc_GM479516143.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/game-give-free-robux_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-pet-snacks-coin-master_GM406889139.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-robux-roblox-forums_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-minecraft-hacks_GM479516143.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/apps-to-get-free-robux_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/mac-roblox-hacks_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/how-do-you-get-a-roblox-account-and-hack-someones_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/coin-master-real-free-spins_GM406889139.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/coin-master-hack-review_GM406889139.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/is-minecraft-free-on-pc_GM479516143.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/minecraft-build-hacks_GM479516143.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-robux-every-time-of-use_GM431946152.pdf
- https://www.vadai.sg/uploaded_files/userfiles/files/free-robux-games_GM431946152.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_off00003096.bin` `7a06e09b29d2f7eada6006ebf8e3d537346b76399f4e4971a767d18bc04fd8cb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3096	21372 bytes
`font_01_sfnt_off00005f33.bin` `ba475106b978755d48beb0f6503d076650b6b83ab3a82f95b6f0fa2276cffdb9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F33	18820 bytes

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