PDF malware analysis — malicious · 062fc3f36f4b7123

MALICIOUS

PDF

44.2 KB Created: 2021-06-01 16:17:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 5aaeca204dfbc6b81f99fa19a958ba43 SHA-1: 5af3b0974c5a724ed8e36930810b948f8c58bc20 SHA-256: 062fc3f36f4b712365e8683558f99eff9a1a8e48b9308ef67882bd90dc260440

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded links and a link farm, strongly suggesting it is designed to redirect users to external sites. The document body and extracted URLs indicate a lure related to free game items or cheats, such as 'Robux Gratis Free'. The ML classifier and PDF link farm heuristics confirm the malicious nature of the document, likely serving as a phishing or malware distribution vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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/robux-gratis-free-game-hack
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-btools-cheat-engine_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-education-free_GM479516143.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/get-free-rainway-nation-shirts-and-pants-roblox_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/coin-master-free-spin-link-today-2021_GM406889139.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/latest-roblox-hacks-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-coins-and-spins-for-coin-master_GM406889139.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-games-that-give-you-robux-for-free_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-hacks-gliches-or-troll_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-dominus-in-roblox-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-phantom-forces-free-money_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/i-love-cats-shirt-roblox-free-denis_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-instantly_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/fly-hack-prison-life-roblox_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-disney-plus-accounts-tiktok_GM835599320.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/get-free-obc-in-roblox-2021_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/robux-earn-free_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-delta-hack_GM431946152.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/tiktok-viewer-free_GM835599320.pdf
- https://taxandmore.nl/wp-content/uploads/fsqm-files/robux-free-hack-no-survey-2021_GM431946152.pdf
- https://www.bandicam.com
- 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_off000051a3.bin` `03610b88ea34719c9a33143913c60142982910d054c17d90579fda63b99a05e3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x51A3	24348 bytes
`font_01_sfnt_off00008979.bin` `f015c2816b73b8aaedff3ad6e2d3875abb8ea5bb6b85ecfc066b122cb6769efd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8979	18468 bytes

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