PDF malware analysis — malicious · a217991882a3ed42

MALICIOUS

PDF

40.4 KB Created: 2020-09-04 03:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f4e74b44cb2662318f67c63323f12668 SHA-1: 20df1d093df6b08bd6f34527a09cf37bc8ac6fca SHA-256: a217991882a3ed42e5a92a96e6b3f68b9fdcbd787377e7f3a780b801427fb04e

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains a heuristic firing for a malicious redirector link and a browser extension installation lure. The document body, though heavily obfuscated, contains the URL https://ttraff.me/wix?keyword=free++firefox+focus, which is likely used to redirect the user to a malicious site. The presence of a large number of external PDF links also suggests a link farm used for SEO poisoning or distributing further malicious content.

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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://ttraff.me/wix?keyword=free++firefox+focus
- https://static.usrfiles.com/ugd/b54ff4_ceb5cd22be1d4426ad3d15fa39c4e58f.pdf
- https://static.usrfiles.com/ugd/b8c837_adf11f39feff487e8b7240dbf7e34420.pdf
- https://static.usrfiles.com/ugd/b8c837_04bdddd48700441bb53d7274cfbef8dd.pdf
- https://static.usrfiles.com/ugd/b8c837_ee07d8dff7c54610bdfb3dfd0d904837.pdf
- https://static.usrfiles.com/ugd/dd4472_2fd167ad461c418fb74840a745eb3359.pdf
- https://static.usrfiles.com/ugd/3b0c81_6d1de5a5c76446a8b39718b63ff27471.pdf
- https://static.usrfiles.com/ugd/95bb70_df448f2e648d4c5eab7e4865f6dae2a1.pdf
- https://static.usrfiles.com/ugd/48d9a1_5dfcf06be21c4563a73c20ab49284b78.pdf
- https://static.usrfiles.com/ugd/45e30f_b7494f3d32cd4c359d320a899ad50641.pdf
- https://static.usrfiles.com/ugd/1f5cef_2b07215be80141ff99dc20db2c3e6c92.pdf
- https://static.usrfiles.com/ugd/e5a943_5e4c52686a614c8e87d1dc80bad8ec9a.pdf
- https://static.usrfiles.com/ugd/739437_0330e4bc2658420a896965d9d8adf5b1.pdf
- https://static.usrfiles.com/ugd/4dded2_07eb1783549f4954bc38b96bb5ba3858.pdf
- https://static.usrfiles.com/ugd/191a6d_39f5584a4d57400994886ba701c960ad.pdf
- https://static.usrfiles.com/ugd/49be48_49e7de84fede4f818ccb2522785bceb3.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000062d4.bin` `129e0a8f044d4680aa1737ecd239d9752d09f6602162d50360d12fd38660beca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62D4	4656 bytes
`font_01_sfnt_off000072c7.bin` `3da324549dda017a91a37a72223ddaf5538bba47bc370a191aa7b2168c422153`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72C7	10012 bytes

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