PDF malware analysis — malicious · c0dc7a4207bb5b57

MALICIOUS

PDF

48.5 KB Created: 2021-06-07 07:49:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: fd6d33f3d732cb8a4013960b3061f51e SHA-1: 0687d3c918da6cbe3f169e554655b1bf8cb21fa6 SHA-256: c0dc7a4207bb5b57913ad7a2c9d6df27efb350d76bbf93066f614d743a0be7aa

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm, likely intended to manipulate search engine results or direct users to malicious content. The presence of a "download" button lure further supports a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to deliver or redirect to malicious payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small 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.
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.tw/app/431946152/code-for-generate-free-robux-game-hack
- http://www.med-aid.vn/ckfinder/userfiles/files/free-roblox-com_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/minecraft-pe-server-hosting-free_GM479516143.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/is-minecraft-free_GM479516143.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/how-to-get-free-food-on-coin-master_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/free-coins-for-coin-master_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/free-roblox-svg_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/best-way-to-get-free-robux_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/roblox-free-rubox_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/roblox-microsoft-rewards_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/can-you-get-robux-for-free_GM431946152.pdf
- http://www.med-aid.vn/ckfinder/userfiles/files/free-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000542d.bin` `418dd3578d3a700e066946f30905a79c4fb0a3b5a44cdcf97c858377438ceb19`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x542D	25996 bytes
`font_01_sfnt_off00008fd1.bin` `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FD1	2940 bytes
`font_02_sfnt_off000099e1.bin` `fefb09855c94f04ccf1b02bce59aeda9f04a9427d69599a78ff56c4b0b9417da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99E1	18520 bytes

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