Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d593a257c07b46…

MALICIOUS

PDF

39.0 KB Created: 2020-09-02 00:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b7b829f9d18b31bb5626dfdbd59cd07 SHA-1: 07397d9919eee0c5710290a47f597a3169bd6f50 SHA-256: e2d593a257c07b46b63cc708019a44611c7c407147816307873f7fc40ba88b6b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=confidential+and+open+reporting+system'. The document body, though heavily obfuscated, contains text fragments that appear to be related to a 'confidential and open reporting system' and also includes the malicious URL. The presence of a link farm heuristic further suggests an attempt to distribute malicious links.

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=confidential+and+open+reporting+system
    • https://cdn.shopify.com/s/files/1/0432/9675/1771/files/ugly_drum_smoker_plans.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/fawiro.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/wurelesilukobodojuliwa.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa446c470eb4569818538220fc8a54d.pdf
    • https://static.usrfiles.com/ugd/08e331_a617b2ed2e034b03988fc99ab2763821.pdf
    • https://static.usrfiles.com/ugd/1813b3_6c7691de2345491fa47d13d317ad16ee.pdf
    • https://static.usrfiles.com/ugd/32777b_8ceec2aa1a354cfabee577c07d1c12e2.pdf
    • https://static.usrfiles.com/ugd/f241d9_1d3165e647fe4ef9a47758a5f87ad8fa.pdf
    • https://static.usrfiles.com/ugd/764aaa_8ce16cd7dd424530a26316fb5af1bcf2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a74cb174d81c4b5a8607fe88352d6d92.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_off00005b06.bin
665b14e708200a6fc2084f8a36fdc36447f3da8043a93d489ec45b2f984599da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B06 5368 bytes
font_01_sfnt_off00006d3c.bin
82c6fff210eeecb45c8df61000f205acb008277cc17441fac1b1805816178461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3C 10128 bytes

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