PDF malware analysis — malicious · 4b42e5b34846c3f6

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 00:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 72b6ec38bf7927c144881955a755e444 SHA-1: 1a9e726614c2c10c382210eee7bba9d0ae2a1c6f SHA-256: 4b42e5b34846c3f6476dfd62a62f718edab40ac8e35ec3a4d7f49b4bce3f1dba

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of the embedded links directs to ttraff.com, which is flagged as a malicious redirector. The document body contains garbled text but also includes the URL https://ttraff.com/wix?keyword=vintage+fishing+reels, suggesting a lure related to the keywords provided.

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.com/wix?keyword=vintage+fishing+reels
- https://static.usrfiles.com/ugd/b8c837_952a23d24fa44b4ea448cb5f7eb4a635.pdf
- https://static.usrfiles.com/ugd/be19e1_63dd22f1fe35493a878b721d0ef8b4ac.pdf
- https://static.usrfiles.com/ugd/b8c837_423207164244401794b466760c6e51b7.pdf
- https://static.usrfiles.com/ugd/77941b_0d25d58568da47b4aeabf1026af86263.pdf
- https://static.usrfiles.com/ugd/9ea91e_43eb1067778b4c39928db5e9bec0d013.pdf
- https://static.usrfiles.com/ugd/b8c837_d78f471f79da4167b0a7e9953e87252a.pdf
- https://static.usrfiles.com/ugd/b8c837_6263b29036f743c0a76294c39c240abd.pdf
- https://static.usrfiles.com/ugd/b444d4_5115c76bfebd4018b731c5f103f9eeca.pdf
- https://static.usrfiles.com/ugd/724bd4_851baf273f714fc58a4a8c0c77c465e7.pdf
- https://static.usrfiles.com/ugd/e2f197_3bebd5abe1a147ab8c4bfbb40f0d80f7.pdf
- https://static.usrfiles.com/ugd/87a178_55f3803cf6104708986ffa24d3771b16.pdf
- https://static.usrfiles.com/ugd/07ef24_66e8d4d94729435182f298024cfc0136.pdf
- https://static.usrfiles.com/ugd/de65f7_c94d4da7ab4e405b8d194837df443727.pdf
- https://static.usrfiles.com/ugd/ea5d7b_8848906980eb4ffda229b25f1055d8f6.pdf
- https://static.usrfiles.com/ugd/b8c837_e95555a83f284e1885e72a1b35a6328a.pdf
- https://static.usrfiles.com/ugd/6908d7_43810b310c13414b9026468833702dfb.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_off0000798a.bin` `557b72c637913da7f22d6075d80048394f2548d0830654b0a7b2e0f43ba41944`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x798A	4992 bytes
`font_01_sfnt_off00008a85.bin` `2cb8d9c3a62fc3d9b7b893c8c643eb3132f2eeee3dead589bc4b6dc394266764`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A85	10076 bytes

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