PDF malware analysis — malicious · 879cad74dfe96f0d

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 16:20:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 1dee47ad58604ba0208240d2a46faa43 SHA-1: ab3543fffd87b0d1f59af5dfd394304ea613bb6f SHA-256: 879cad74dfe96f0d196a7b0072529a3d9e44eab64bd69aed7b7bf2c30dab7a85

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm. The primary URL, https://netcdn.xyz/app/431946152/free-roblox-app-game-hack, and the numerous links to game-related hack PDFs indicate a lure for users to download potentially unwanted or malicious applications. The ML classifier also flagged this PDF as malicious with a high score.

Machine Learning

Nyx PDF Classifier malicious score 0.9648

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.xyz/app/431946152/free-roblox-app-game-hack
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-download-hack-ios_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-hack-cheat-generator-d_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-coins-spins-on-coin-master_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-free-minecraft-coins_GM479516143.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spin-game_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-pet-food-on-coin-master_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spin-whatsapp-group-link_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-daily-coin-master-coins_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-free-hair-codes_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/robux-hack-tools_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdf
- http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/microsoft-bing-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
`stream_003_off000049c1.bin` `30c3ec74fe8766b45aab78a0df62a575bdc24746dd86d83463c1775d33ae9f30`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49C1	24552 bytes
`font_01_sfnt_off000080c5.bin` `baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80C5	2844 bytes
`font_02_sfnt_off00008a86.bin` `b55918b8480f66a9a053d61f951430dbcd2a64ad9c4d9286342bad064f4e5d72`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A86	18124 bytes

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