PDF malware analysis — malicious · 54b205d190d9a562

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 15:29:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 0fcc09a1dea3e6d125786917663281f6 SHA-1: 09ae4dda6cd25fd756b4fd6d8fe8b280dbcfdd3f SHA-256: 54b205d190d9a562a5ce4ede0ffbebb13120af84e5429554929b9274459f98c2

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages promising free Robux or Coin Master spins. This indicates a link farm designed to lure users to potentially malicious download sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-hack-november-2021-no-wait-game-hack
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-robux-without-any-verification_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-report-hacker_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/how-o-get-free-robux-trackid-sp006_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-roblox-clothes-templates-pants-galaxy_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/get-coin-master-spins-free_GM406889139.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-spins-coin-master-apple_GM406889139.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-coin-master-links_GM406889139.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/add-robux-us-roblox-hack_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-roblox-toys_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/legit-coin-master-hack-no-human-verification_GM406889139.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-roblox-outfits-2021_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/minecraft-beta-free_GM479516143.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-roblox-redeem-codes-that-havent-been-used-august-2021_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-do-speed-hack-on-roblox-mad-paintball_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/c7-roblox-hack_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-case-clicker-coinflip-cheat_GM431946152.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-reward-link_GM406889139.pdf
- https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-hack-forums_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_off000030aa.bin` `e4d5cdeceb8d17b9905489f2973a11a221acefccba563f8078c8d9cf4406afaf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30AA	22184 bytes
`font_01_sfnt_off000061fd.bin` `3bd1a53924eca5ed1c79aa40aeb0b48d21797f8680b96a6983f493effeba76d9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61FD	20084 bytes

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