Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb1695491ee38ab…

MALICIOUS

PDF

41.4 KB Created: 2020-08-29 22:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bccde707c692c22b1cdb739a2efe7ec SHA-1: 751daf9fdf60647dc54737e34e93cc2f06bcb104 SHA-256: ccb1695491ee38ab4aa72365a4bb650c66dc38f469d16574a2d0d9e8087ca13a
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 Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The primary malicious URL is https://ttraff.cc/wix?keyword=el+animal+social+pdf, which is likely used to redirect users to further malicious 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.cc/wix?keyword=el+animal+social+pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/pelulakemafasu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2952/6690/files/beast_wars_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/lojorirajido.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/no_other_woman_2011.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/sisiteguvasugisusejus.pdf
    • https://static.usrfiles.com/ugd/0dcf4b_c6ac4ae70be640dca7909a71c0646c2c.pdf
    • https://static.usrfiles.com/ugd/b8c837_408e0eff55044fd68ccb7aff459136fc.pdf
    • https://static.usrfiles.com/ugd/a4e402_03fb34ce2fd84a4ea92e53d0db7949d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab263fd15120447dbafc7365514bc4bb.pdf
    • https://static.usrfiles.com/ugd/b5472a_01f714f5b1c14e1bbeef5164203df88f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0bf76ed2e9d4340941d420442a5ad67.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2ee0cc9306f4fedadae902f9e2f56ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_82215c7f92a84d68842c521fdb60dc0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d82431258d294cb28df6f2b71e44f2a7.pdf
    • https://static.usrfiles.com/ugd/98e298_24d3ee9e4628495b838af1501508026e.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_off00005563.bin
adddd34a75af8a5aae72b647d70a6228b72b0477bb2da6d7567ac3b98ccfc7ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5563 5164 bytes
font_01_sfnt_off000066e1.bin
ebdf6637f2fb6131d03ae3abb2e1404e06ff6912b400961971bbf3de1e5b8f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E1 16820 bytes

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