PDF malware analysis — malicious · 217c09a8ecf25c3e

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 01:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fea0c2e4e9c8327376b49ebd4001b2e3 SHA-1: 73eaa700f2c7e983d2be9d65ead8dec11464f792 SHA-256: 217c09a8ecf25c3edc1692e83e5ce6224d90ef85035da6a9acfb26ac428da5ae

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/wix?keyword=s%25C3%25A3o+cipriano+capa+preta+livro+pdf`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with `https://static.usrfiles.com/ugd/0f5b72_a441083e7c624059b63084451f666206.pdf` being one of the first identified. The document body, though partially corrupted, contains the same malicious URL, suggesting a social engineering attempt to trick users into downloading potentially harmful content.

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=s%25C3%25A3o+cipriano+capa+preta+livro+pdf
- https://static.usrfiles.com/ugd/0f5b72_a441083e7c624059b63084451f666206.pdf
- https://static.usrfiles.com/ugd/34e21e_66b4bb0e11184bf083c3ce206c782bc3.pdf
- https://static.usrfiles.com/ugd/b8c837_149507f2d77e4a9488cc1ef10ebe7490.pdf
- https://static.usrfiles.com/ugd/b8c837_7866946b93d54e1b8cc38ddc9c8c8b0d.pdf
- https://static.usrfiles.com/ugd/824332_3e612d311edb43cd905f904f331a8abe.pdf
- https://cdn.shopify.com/s/files/1/0432/1175/1588/files/kuwixixijovikanelinetu.pdf
- https://cdn.shopify.com/s/files/1/0437/7280/5277/files/94801459719.pdf
- https://static.usrfiles.com/ugd/b8c837_98a3294d0fdd43828a85bcd1b00c5cf5.pdf
- https://static.usrfiles.com/ugd/cbdbb6_c72cd927127b452a87d5a80d6fa9c10c.pdf
- https://static.usrfiles.com/ugd/516574_593b5065b75149a5bd191d321ad8ac6d.pdf
- https://static.usrfiles.com/ugd/4b68be_5c0381ddc4884e46b5cf1841fd6a73bb.pdf
- https://static.usrfiles.com/ugd/9e41f0_288ff828dd96484bbc00d109a393bb3c.pdf
- https://static.usrfiles.com/ugd/b8c837_d63e9179ec9c4057915a8716084d9ae0.pdf
- https://static.usrfiles.com/ugd/b8c837_e9a201ea9e9b486cbd7d8926f9c12019.pdf
- https://static.usrfiles.com/ugd/a382ee_1fe4d0bc00784f7780b0a5d276db3af5.pdf
- https://static.usrfiles.com/ugd/7f929b_30ecdf842c1b4b87b5724059d0d94c7f.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_off00006fd6.bin` `04afb4acf437c92edbd6f64c4df06324b1e35fc09beb17769e667ee3e3ec96e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FD6	5452 bytes
`font_01_sfnt_off000081d4.bin` `363802d5b3b331bb37e9c149ebbb60127e3d047fdc6fee6e4dd398326fbd2e42`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81D4	12328 bytes

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