Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b13ae02166d6db6…

MALICIOUS

PDF

44.4 KB Created: 2020-08-30 10:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65a6a364d2caa658ed95e306481b7d2a SHA-1: 7b831b0eeca6fd6cec8a9ca7745a057c365d040f SHA-256: 1b13ae02166d6db65e9cffdde3d2d8a8bee3df704bfd0ddea8227a8f490e59d6
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, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.com/wix?keyword=county+line+finish+mower+manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to a mower manual, likely serving as a lure to encourage clicks on the malicious link.

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=county+line+finish+mower+manual
    • https://static.usrfiles.com/ugd/7ea8bb_7374134eb9314ff19925e80dfef719cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_0318ce9b7a9f4da4803544ac6e87b46f.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_206e8fbb45824fd2bdaf43afce0d3864.pdf
    • https://static.usrfiles.com/ugd/a48928_4175c5d8dd3c4911ac8446939f44e98b.pdf
    • https://static.usrfiles.com/ugd/b8c837_cee92d8717b9425ca8309b0d9d641a30.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/22406588111.pdf
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/wow_vanilla_alchemy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/nizikujubuxuvitati.pdf
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/sonic_fear_3_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_d677f11c83154ee2b04673a7628ada5d.pdf
    • https://static.usrfiles.com/ugd/c0b427_c88d8c769bac4c51a3bfd610bb42d86b.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/archives_of_computational_methods_in_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/homemade_stump_grinder.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_off00006695.bin
4f152821f7789f1d71f99a72c08bd821f53aa7c3e2fdae506ab098787736a991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6695 5108 bytes
font_01_sfnt_off000077df.bin
83a9637c2203d51ddf44b7036ff81c8b71116748143812697a56b0fa79623ebd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DF 14340 bytes

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