Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde4b064c761a2d6…

MALICIOUS

PDF

83.7 KB Created: 2020-09-07 13:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51d250843d5a3df478610b3faa9b5905 SHA-1: 0d4e5c7c2a2f48327da3bfd1629f37f546d43ea0 SHA-256: fde4b064c761a2d6e0cc336dd2f5e714756aefb86e1af1789c90bea66ca25780
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, a PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger scheme to generate traffic. The embedded URL `https://ttraff.com/wix?keyword=electromagnetic+spectrum+wavelength+and+frequency+table+pdf` is the primary indicator of this malicious redirection attempt.

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=electromagnetic+spectrum+wavelength+and+frequency+table+pdf
    • https://static.usrfiles.com/ugd/739437_c1d6009f81cf4fc58d244dc176573118.pdf
    • https://static.usrfiles.com/ugd/78c764_11e5adf3594c471a8a9e1bc2125750ca.pdf
    • https://static.usrfiles.com/ugd/b80405_5ae021868f964e7ba315705ba793ab01.pdf
    • https://static.usrfiles.com/ugd/3fc21f_62578f3a92284bb8896554e9c8b657ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_d806e75cab6c483798b6589295d60fd6.pdf
    • https://static.usrfiles.com/ugd/1849a1_f44d2f28a1c44404b4fa78e76c8cfdfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3adabb3da63441b94fc10baf91845ec.pdf
    • https://static.usrfiles.com/ugd/ac72e0_72b08254e8ce451abb57db02325b6e5e.pdf
    • https://cdn.shopify.com/s/files/1/0462/4069/4432/files/31856281839.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/suzuwozixo.pdf
    • https://static.usrfiles.com/ugd/5af86b_7fe62b895bdd4ec69faaf870600d7bd1.pdf
    • https://static.usrfiles.com/ugd/ee6770_dc8bb9d9370741d889d88ee178f9d57a.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_off000104d7.bin
db2ed36cff1e3aac9c8b9acc3706aeed50fe68b6f43fb0e8ab637f3733ccf75e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104D7 6048 bytes
font_01_sfnt_off00011953.bin
cfbaf60b21bfa945e39e9ec6142b337f59ccb982c46181854621bb78973611d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11953 11824 bytes

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