Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a5ba46f6b69309…

MALICIOUS

PDF

55.3 KB Created: 2020-08-29 12:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7af68262afd4dddb50eefef92e0e1d90 SHA-1: b9fbda394d366806af92fb996d6760a8a6ed0e9b SHA-256: d5a5ba46f6b69309c1562417e08423d051a61079634533ca5a08e3712f1a64d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a lure related to 'Thomson Reuters Eikon certification test answers'. The document also contains a mass external PDF link farm, with the primary host being 'static.usrfiles.com'. The embedded URLs suggest a phishing or scam attempt to redirect users to potentially 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.com/wix?keyword=thomson+reuters+eikon+certification+test+answers
    • https://static.usrfiles.com/ugd/b8c837_9d3e9abb2b6948a4a38ce6d4ba5f8abb.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3a080b41d5e40d0879a4276ef87e7a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e175e5fc7a024085aeb4e680d025616e.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf74f1ab28294179afd852799f9906ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_96a5ec8415224b5082beb56add50a40d.pdf
    • https://cdn.shopify.com/s/files/1/0434/6026/4096/files/27414835258.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6074/files/wagilotazolososemuda.pdf
    • https://static.usrfiles.com/ugd/b8c837_76caa8574d1f42748c249e5a7a8c8f39.pdf
    • https://static.usrfiles.com/ugd/b8c837_1272f4950e444fbfa716bbce6ea31bf6.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5e70ac7081e4bd6b0dd057354b0faff.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d6c28f4f1634f46804adda5f68eccf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_12c70df8f6874c928cbe2bf06766e928.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_off00008fb3.bin
7b069720b54479784c4055369a3f340f24a5e27052635284c62c764e92c67391		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB3 5192 bytes
font_01_sfnt_off0000a14d.bin
06eadd6220bfab22ca7066059ae7310fa1a661bbc40515a29707b3b74ea840ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA14D 15184 bytes

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