PDF malware analysis — malicious · 851b3e95db65b23b

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 08:56:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 4667509ec773af0b2001861df91d0c8d SHA-1: d5252fa0363a27db59ef99deeef10e5b7ebf8195 SHA-256: 851b3e95db65b23b9dd56bd183d612e6dbf6fd10025f4ca782ef4eba53065206

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files, suggesting a link farm or content-loading mechanism. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or downloads. The document body and extracted URLs point towards lures for game hacks and currency, a common phishing tactic.

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.tw/app/406889139/coin-master-gold-cards-hack-game-hack
- https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-hack-pro-gamers-com_GM406889139.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/free-robux-com_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/robux-money_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-free-roblox_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-hack-roblox-life-in-paradisew_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/island-2-roblox-hack_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/como-distruir-juegos-en-roblox-sin-hack_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-change-roblox-name-for-free_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/daily-free-spins-coin-master-heaven_GM406889139.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/roblox-cheat-dll_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/admin-command-hack-guide-roblox_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spins-hacktman_GM406889139.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/roblox-dungeon-quest-no-skill-coulddown-script-hack_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/easy-way-to-get-free-robux-2021_GM431946152.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/is-free-followers-on-tiktok-free_GM835599320.pdf
- https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-a-free-shirt-on-roblox-without-bc_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_off0000346c.bin` `704b7387ecec589e56a298b857da8ef31daa0a060779f0585170f5bd62b66191`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x346C	22856 bytes
`font_01_sfnt_off000067a6.bin` `86d208c87cd9723521760f39289724e0803f9f68e91a8c51082ac7ab23afa3dc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67A6	18252 bytes

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