Malicious PDF — malware analysis report

Static analysis result for SHA-256 591859efb4b7e59b…

MALICIOUS

PDF

57.7 KB Created: 2020-09-01 00:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec32aac1758ea85698b38aaebcacaae SHA-1: 26642ba2cc2715ea1a9602ccefe47d2588db55a5 SHA-256: 591859efb4b7e59b5a47a6f89cd9e5234b99e30c8cc7b2ccbf7d5b5b4f7eae5a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used to create SEO spam or to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.com/wix?keyword=eizo+monitor+calibration+software', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to calibration software, likely as a lure.

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=eizo+monitor+calibration+software
    • https://cdn.shopify.com/s/files/1/0432/9167/2736/files/rozanopul.pdf
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/plex_raspberry_pi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/rikuvulajixanor.pdf
    • https://cdn.shopify.com/s/files/1/0463/0570/6146/files/boxidu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0431/4857/4884/files/9819999649.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/rofutavud.pdf
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/49745476559.pdf
    • https://static.usrfiles.com/ugd/8cbfce_cc318e8e1a4249d5ab516bdb1f2dde44.pdf
    • https://static.usrfiles.com/ugd/5ed537_dda52e559878458f959499ded9e63b41.pdf
    • https://static.usrfiles.com/ugd/191a6d_7b345768e78a48b19418089df5f42253.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/arcgis_javascript_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7303/files/american_hunter_feeder_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6054/4156/files/60868895191.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_off000097c6.bin
4bc519211188c8c202d95b2b72d1befd707813af9f8ed5ba9fcdee2af388ba3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97C6 5268 bytes
font_01_sfnt_off0000a9b2.bin
cbf3c2917344a0cc00720e155e5ffe1ad6ad17174104d7aa288fd99875079994		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B2 15568 bytes

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