PDF malware analysis — malicious · 753d298bfe5a0879

MALICIOUS

PDF

39.3 KB Created: 2020-08-29 23:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8a10ddf28b2843d3f9c51954393ee148 SHA-1: 168c07fc0f315da7520c1d951b5db955f7ec442f SHA-256: 753d298bfe5a08796f6d194d00d1b0e2b3c20ded818e95d0dca8a05ca1a2329b

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.ru/wix?keyword=dust+king+kenshi', is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to this URL and other benign-looking PDF files hosted on static.usrfiles.com, suggesting a coordinated effort to lure victims through a chain of redirects.

Heuristics 3

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.
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.ru/wix?keyword=dust+king+kenshi
- https://static.usrfiles.com/ugd/b8c837_2986a01e740a42bebdd0852c6651dd67.pdf
- https://static.usrfiles.com/ugd/b8c837_2b1b63a1a5464ea5ad75349c5086a720.pdf
- https://static.usrfiles.com/ugd/b8c837_2a603dc3220846d0981cb1715f1b9116.pdf
- https://cdn.shopify.com/s/files/1/0431/8242/4215/files/41869334363.pdf
- https://cdn.shopify.com/s/files/1/0440/0611/3430/files/mepofuzinibujizejubapoz.pdf
- https://cdn.shopify.com/s/files/1/0430/6193/6282/files/kokaxikezemozivuza.pdf
- https://cdn.shopify.com/s/files/1/0430/3365/7498/files/87236873642.pdf
- https://cdn.shopify.com/s/files/1/0443/0761/1804/files/primus_brake_controller.pdf
- https://static.usrfiles.com/ugd/b8c837_f940be56f27b41668b7cf9a291be08d0.pdf
- https://static.usrfiles.com/ugd/b8c837_153e1287329848209452019ea5d5b110.pdf
- https://static.usrfiles.com/ugd/b8c837_4f4fad99df694fcabbcc53da8f491fd4.pdf
- https://static.usrfiles.com/ugd/b8c837_6cc8e483236b4629a2d83a1a97a25f86.pdf
- https://static.usrfiles.com/ugd/b8c837_951a8be07acc42fcb0759543a8036017.pdf
- https://static.usrfiles.com/ugd/b8c837_1ee47d256e764390bb80a568278c3939.pdf
- https://static.usrfiles.com/ugd/b8c837_1ea06ee8763242819b6ad57a77c297b8.pdf
- https://static.usrfiles.com/ugd/b8c837_73d16bc170234d44851759f3809eb90f.pdf
- https://static.usrfiles.com/ugd/b8c837_9205e142f72a4937a5e236e07320cc8b.pdf
- https://static.usrfiles.com/ugd/b8c837_eeeec7059f2c46c69f5ad0e5a6696a2e.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_off00005d82.bin` `8ff0f9e891369afb3366ffa93d02f58b17f3a7150e0127e80dfa850fe7e8d2c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D82	4672 bytes
`font_01_sfnt_off00006d69.bin` `866d214e6fab41ed79206334789b36818ac2b1dbbc888d5c796655b8d77cfeaf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D69	10240 bytes

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