MALICIOUS
82
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document that displays a fake CAPTCHA to trick the user into interacting with it. It contains an embedded URI pointing to a suspicious URL, likely intended to download a second-stage payload. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9769
Heuristics 4
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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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Embedded URL info EMBEDDED_URLOne 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.online/app/431946152/roblox-promo-codes-free-robux-game-hack
- https://www.wcauk.org/uploads/files/files/how-to-get-free-coins-on-coin-master_GM406889139.pdf
- https://www.wcauk.org/uploads/files/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
- https://www.wcauk.org/uploads/files/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/free-minecraft-survival-server_GM479516143.pdf
- https://www.wcauk.org/uploads/files/files/master-free-spins-and-coins_GM406889139.pdf
- https://www.wcauk.org/uploads/files/files/minecraft-svg-images-free_GM479516143.pdf
- https://www.wcauk.org/uploads/files/files/codes-how-to-get-free-robux_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/is-roblox-free-on-nintendo-switch_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/roblox-free-robux-codes_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/free-tiktok-app_GM835599320.pdf
- https://www.wcauk.org/uploads/files/files/rbl-gg-free-robux_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/coin-master-hack-game_GM406889139.pdf
- https://www.wcauk.org/uploads/files/files/free-minecraft-account_GM479516143.pdf
- https://www.wcauk.org/uploads/files/files/free-robux-generator-2021_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/free-robux-exe_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
- https://www.wcauk.org/uploads/files/files/roblox-its-free_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/free-robux-codes-2021-not-used_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/robux-hack-generator_GM431946152.pdf
- https://www.wcauk.org/uploads/files/files/minecraft-bedrock-hacks_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off00005180.bin51926b3141d27e445d8ee3835b095e26dca753959a7c8f7cbfced375a736ecae |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x5180 | 24936 bytes |
font_01_sfnt_off00008af9.binbaad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8AF9 | 2844 bytes |
font_02_sfnt_off000094bb.bin3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94BB | 18676 bytes |
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