PDF malware analysis — malicious · 60dbecb573765d26

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 09:39:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3babb2487c07ee92df4a9722a9fdaa47 SHA-1: a5e9b645b5b832379cfa08a9c786caf0ae1a1f4b SHA-256: 60dbecb573765d2628d537f1e0d09cf6bd9832abca04c7e38f47790483508992

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO link farms, promoting game hacks and cheats. The primary URL, http://netcdn.tw/app/431946152/robux-generator-com-game-hack, suggests a lure for potentially malicious downloads. The ML classifier also strongly indicated maliciousness.

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/431946152/robux-generator-com-game-hack
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-roblox-builders-club-2021_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/who-get-free-face-robux-2021_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/copy-and-paste-free-robux_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-hacks-android_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-free-clothing-on-roblox_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-win-free-robux_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-hack-xyz_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/buy-robux-free-2021_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-roblox-stuff-2021_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-a-free-code-for-a-robux-card_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-spin-app-coin-master_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-roblox-jailbreak-vip-server-link_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/hack-coin-master-without-verification_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-ipad-mini-2021_GM431946152.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/como-hackear-juego-coin-master_GM406889139.pdf
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/cheat-roblox-shark-bite_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_off00003150.bin` `96d7b7840918624ab0785f6f3580c23574015beedeadc0eff2a2b5c527ce1c73`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3150	22460 bytes
`font_01_sfnt_off00006366.bin` `088691c65f50ab09531f1c851a077ebe27b1f4f318b0f1904c67811985fc4ac6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6366	18916 bytes

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