Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5637792034d457b…

MALICIOUS

PDF

45.2 KB Created: 2020-08-30 15:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65da108f3528e25454a2e7c07b8a2ceb SHA-1: 3cb129f9193980562e4c9783b4dbc0693edcf2a3 SHA-256: d5637792034d457bb470f9b73fd086ea82113e0aaccc3512997d1842d1ad5a2d
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, identified as a link farm. One of these links, https://ttraff.com/wix?keyword=aws+certified+advanced+networking+of, points to known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, but the presence of numerous links suggests a social engineering attempt to lure users to malicious sites, likely for credential harvesting or malware distribution.

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=aws+certified+advanced+networking+of
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/12133632773.pdf
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/66035229303.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/puxejenavalalarifatugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdf
    • https://static.usrfiles.com/ugd/97368a_9430ee9b67e24568a051f8f48fe881ca.pdf
    • https://static.usrfiles.com/ugd/0d2908_b6b595dc4e89473e89e55d61308c6e62.pdf
    • https://static.usrfiles.com/ugd/4d6844_ddabb6766e6e4eb287dae4c39cdf285f.pdf
    • https://static.usrfiles.com/ugd/c3f88d_e62b6c379d024305a3dae72e596cb267.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/45676679254.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/dollar_tree_hiring_age.pdf
    • https://cdn.shopify.com/s/files/1/0429/2893/0979/files/nalugezajapazewoses.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/bosasodurujexidijevifara.pdf
    • https://cdn.shopify.com/s/files/1/0437/6723/4714/files/jawilo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/16916532653.pdf
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/55201173165.pdf
    • https://cdn.shopify.com/s/files/1/0433/8411/1267/files/answering_interview_questions_format.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_off0000714e.bin
c57b3df062b34366f55d5ab16a3eb394811351853b24fb71afbc22ac60c6062f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x714E 5364 bytes
font_01_sfnt_off000083af.bin
9c22af39d1667e88d55451e742a3bcbdb6750344820528f71d4b4ccf6770d98b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AF 10504 bytes

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