MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm or scam operation. The document body and heuristics indicate a lure for 'free Robux' and game cheats, presented with a fake CAPTCHA to trick users into clicking malicious links. The ML classifier also flagged this PDF as malicious with high confidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9865
Heuristics 5
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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.tw/app/431946152/free-robux-pastebin-youtube-game-hack
- http://acp-institut.fr/images/coin-master-spins-free-2021_GM406889139.pdf
- http://acp-institut.fr/images/spinuri-gratis-coin-master_GM406889139.pdf
- http://acp-institut.fr/images/free-robux-working_GM431946152.pdf
- http://acp-institut.fr/images/coin-master-free-2021-spin-link_GM406889139.pdf
- http://acp-institut.fr/images/free-robux-with-no-survey_GM431946152.pdf
- http://acp-institut.fr/images/how-to-get-free-robux-as-a-kid_GM431946152.pdf
- http://acp-institut.fr/images/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
- http://acp-institut.fr/images/coin-master-free-spins-11-01-2021_GM406889139.pdf
- http://acp-institut.fr/images/hack-infinito-chakra-naruto-final-bond-roblox_GM431946152.pdf
- http://acp-institut.fr/images/free-spins-for-coin-master-app_GM406889139.pdf
- http://acp-institut.fr/images/code-pour-free-rpg-simulator-roblox_GM431946152.pdf
- http://acp-institut.fr/images/chisel-and-bits-mod-minecraft-pe_GM479516143.pdf
- http://acp-institut.fr/images/coin-master-free-spins-cheat_GM406889139.pdf
- http://acp-institut.fr/images/how-to-get-robux-for-free-on-pc-2021_GM431946152.pdf
- http://acp-institut.fr/images/free-roblox-com_GM431946152.pdf
- http://acp-institut.fr/images/good-free-minecraft-server-hosting_GM479516143.pdf
- http://acp-institut.fr/images/but-link-says-free-robux_GM431946152.pdf
- http://acp-institut.fr/images/roblox-build-a-boat-for-treasure-free-gold_GM431946152.pdf
- http://acp-institut.fr/images/roblox-com-free_GM431946152.pdf
- http://acp-institut.fr/images/coin-master-free-spin-no-offers_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off0000516e.bin2c4d11a3dc00aef8d6a1473614ce8b5024669760bdf23bc0059d803ec7156dc8 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x516E | 24724 bytes |
font_01_sfnt_off00008a7a.bin24bb9f9577aaf09cf458d9beb8996806f45627e2bf18e2bd07b63492d6406a6a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A7A | 18784 bytes |
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