Malicious PDF — malware analysis report

Static analysis result for SHA-256 437f57dfc30a6835…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 02:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 794f685ba1065915cade934889e59938 SHA-1: 85a2a2577aa1757c3b1c892b80d4e41d41fdfc2f SHA-256: 437f57dfc30a683577ec6e53871e66495e5f795b121fd76367d8472a52d9f912
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 designed to appear as SEO-optimized content. The primary link, 'https://ttraff.ru/wix?keyword=leverage+leadership+chapter+1', is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=leverage+leadership+chapter+1
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/surig.pdf
    • https://cdn.shopify.com/s/files/1/0435/7193/7439/files/munagesebetuvazo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/67015954486.pdf
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/sanitary_landfill_design.pdf
    • https://static.usrfiles.com/ugd/b8c837_6e84d85fa70c49ba906df7bf6528ebcd.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_7ac2150a112843a2a587ed983198e261.pdf
    • https://static.usrfiles.com/ugd/b5aed9_53e8ee05942147b5a82402392f2bd1ba.pdf
    • https://static.usrfiles.com/ugd/e4a001_77733b8a2f6d4901a5f976c522ffac56.pdf
    • https://static.usrfiles.com/ugd/cd79e3_42db9123f6354cefa5ae9da8affcb893.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_9e07f337cd0f49ab9c9f92379e62f454.pdf
    • https://static.usrfiles.com/ugd/b8c837_5423c5b111fe40129d672af19baa3b33.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_1b044ecf3bce4e39af9a60ff0e057b5e.pdf
    • https://static.usrfiles.com/ugd/f1780b_cd81a8d436bd442692430e17bd16a586.pdf
    • https://static.usrfiles.com/ugd/3826db_df7cd0026c3145abb3f96d399344484c.pdf
    • https://static.usrfiles.com/ugd/cd79e3_d4d151df174e46209a8d5b70946024bc.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_off00005ec6.bin
7425c3f4c4a0570652bb2701c32918c13c35fc36a91a269838dd7b41260b8d99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC6 5388 bytes
font_01_sfnt_off0000711f.bin
6e4fb5867a3a681adee4275c678baa5a9b4bfad44294f2be6277f1a064e0fbd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711F 10144 bytes

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