Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f149c2d30a2827b…

MALICIOUS

PDF

40.9 KB Created: 2020-09-05 16:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc44ce35d285a7fa4bb8094c980db370 SHA-1: 7037d5a1336126fcf3fca1e023da621bbb71f461 SHA-256: 3f149c2d30a2827b28d335d1dc96413debc65fe134b017bf44bda84eb3deca05
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link that is disguised as a utility for converting PDF files to Word documents. This link, 'https://ttraff.link/pify?keyword=convert+pdf+to+word+doc+ocr', is designed to lead users to malicious infrastructure. The PDF also contains a large number of external links, many pointing to Shopify, which is indicative of a link farm used for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=convert+pdf+to+word+doc+ocr
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/dunaxetas.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/nidinidadevulose.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/33581186585.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/71930025340.pdf
    • https://static.usrfiles.com/ugd/10b03a_5c1a32cd2a01415d8a759477d6b208c8.pdf
    • https://static.usrfiles.com/ugd/c0fca2_3726eaa4e90749efa72c17433bb2a0e4.pdf
    • https://static.usrfiles.com/ugd/87fdc7_ca5c08472ac54205bcb55b50ee4fbc51.pdf
    • https://static.usrfiles.com/ugd/a76634_233e4709319c47d5866234e07c93fe1b.pdf
    • https://static.usrfiles.com/ugd/88a84f_523d3e3deb154a348a445485514bd1b3.pdf
    • https://static.usrfiles.com/ugd/4ca7f5_c67824c36e1848dbaaecbe943a374b72.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec3edfbd5ac74a0994f2828b8d9f8f64.pdf
    • https://static.usrfiles.com/ugd/cf14a4_2aed22021967424f9260c0ac95cc75e9.pdf
    • https://static.usrfiles.com/ugd/fafc38_4d32f7932476411d8fcfb7326372ca93.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_40f995b47df1418a865713470c37ff5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_33284a30091f4077a062a2edbcfe5c9e.pdf
    • https://static.usrfiles.com/ugd/81d6a4_926809f42c144b7690e3d9d3b1f22cc7.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.

FilenameKindSourceSize
font_00_sfnt_off00005aa8.bin
7d136fc098146bbc2014ccf1901a0e0be33b11812313fcbe078f7e6e42e88a96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 4788 bytes
font_01_sfnt_off00006b1c.bin
579b0a184b0ca38ef7309ef7c3ab242aa43fecb3445ab0f814150b0dcee535f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C 14116 bytes

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