PDF malware analysis — malicious · c5759c1d2d8a21f2

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 06:58:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9471d46ef157723b5a889b63f6c1b289 SHA-1: e4596e0d522c73577d6cd17fcf6fc84e8aa0d9ca SHA-256: c5759c1d2d8a21f2f71e8b49a2cc4e9b7f04d5ddd9e1b0565a26750bdb6f72b6

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which are structured as SEO-optimized PDF links, suggesting a link farm designed to attract traffic. The document body and extracted URLs indicate a lure related to game hacks and in-game currency, aiming to trick users into downloading malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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.online/app/406889139/coin-master-hacks-2021-game-hack
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-coin-master-spins-no-human-verification_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-pc-hack-tool_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/minecraft-free-download-pc_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-hack-coin-master-computer_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/80-free-spins-coin-master_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-daily-spin-link-app_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/hack-game-plus-com-coin-master_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-links-for-coin-master_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-accounts_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/teach-me-to-hack_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-minecraft-account-and-password-generator_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/cool-minecraft-hacks_GM479516143.pdf
- https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.html
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000524e.bin` `5418b288e0ff04a64a97d7d1bbaf67011ca7f9d1e198cc746839e21ca796bfac`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x524E	29244 bytes
`font_01_sfnt_off00009395.bin` `17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9395	18116 bytes

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