MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a fake CAPTCHA lure and a large number of external links, many of which point to other PDF files, suggesting a link farm designed to trick users into downloading potentially malicious content. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted, but the presence of numerous links and the fake CAPTCHA heuristic strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.8948
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.xyz/app/431946152/www-robux-redeem-game-hack
- http://umksn.pl/images/coin-master-deals_GM406889139.pdf
- http://umksn.pl/images/free-vpn-for-minecraft_GM479516143.pdf
- http://umksn.pl/images/coin-master-free-spins-and-coins-hack_GM406889139.pdf
- http://umksn.pl/images/coin-master-free-spin-and-trading-group_GM406889139.pdf
- http://umksn.pl/images/free-spin-in-coin-master_GM406889139.pdf
- http://umksn.pl/images/blogger-coin-master-free-spins_GM406889139.pdf
- http://umksn.pl/images/free-spins-coin-master-hack-2021_GM406889139.pdf
- http://umksn.pl/images/robux-hack_GM431946152.pdf
- http://umksn.pl/images/how-to-get-free-robux-instantly_GM431946152.pdf
- http://umksn.pl/images/100-free-coin-master-spins_GM406889139.pdf
- http://umksn.pl/images/minecraft-hacked-client-bedrock_GM479516143.pdf
- http://umksn.pl/images/free-spins-for-coin-master-2021_GM406889139.pdf
- http://umksn.pl/images/coin-master-daily-free-spins-link-today_GM406889139.pdf
- http://umksn.pl/images/how-do-you-get-free-roblox_GM431946152.pdf
- http://umksn.pl/images/how-to-get-roblox-premium-for-free_GM431946152.pdf
- http://umksn.pl/images/free-shirt-roblox_GM431946152.pdf
- http://umksn.pl/images/free-robux-codes_GM431946152.pdf
- http://umksn.pl/images/free-spins-on-coin-master-generator_GM406889139.pdf
- http://umksn.pl/images/codes-how-to-get-free-robux_GM431946152.pdf
- http://umksn.pl/images/best-way-to-hack-coin-master_GM406889139.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_off000046d5.bin950b9e8ffc9abcdae7ce68aa117a41cc2d2ed43204533270a4f9308fdd0bfa19 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x46D5 | 26828 bytes |
font_01_sfnt_off00008629.bin450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8629 | 5696 bytes |
font_02_sfnt_off0000933b.bin61e1175fd0613718da88e3f59775346477bef0226bc79823f694c1fc9380e365 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x933B | 18648 bytes |
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