Malicious PDF — malware analysis report

Static analysis result for SHA-256 28faafd61eff8517…

MALICIOUS

PDF

36.6 KB Created: 2020-08-29 22:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d8f68fd0649cf17af8790a11c6990bd SHA-1: 03c0c21fd027a7efbfd7a1f79af40e8818e5c5f4 SHA-256: 28faafd61eff85173a5e6cc9bc81f0cf6052e72e52ba9be9ccbb88ece306e0b3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a link farm, with multiple embedded URLs pointing to external resources. One of these URLs, 'https://ttraff.cc/wix?keyword=guide+to+evidence+based+physical+the', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct the user to malicious infrastructure. The presence of a link farm and a malicious redirector indicates a social engineering tactic to lead users to potentially harmful 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.cc/wix?keyword=guide+to+evidence+based+physical+the
    • https://static.usrfiles.com/ugd/a2d007_0c701f8803934494ac986c20ca122c54.pdf
    • https://static.usrfiles.com/ugd/b8c837_00d44119059045af8d821055747431c7.pdf
    • https://static.usrfiles.com/ugd/b13fd1_8b652da99cc245faab4cc42d421579fb.pdf
    • https://static.usrfiles.com/ugd/2ac701_adaa0eb6dba246c7b9dfe011fe97a16d.pdf
    • https://static.usrfiles.com/ugd/191a6d_2bbeac128a3142909792845231573a13.pdf
    • https://static.usrfiles.com/ugd/b8c837_69eacfa2fd24478ab8177c7c07243d6e.pdf
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/siruwuzofajo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3319/0823/files/blog_post_format_examples.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/8273352406.pdf
    • https://static.usrfiles.com/ugd/b8c837_c26904b176ba4d1dbcdc386cbf40fb12.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad8ec77c1d674a20b193146279898101.pdf
    • https://static.usrfiles.com/ugd/b8c837_78952e12e6b24859b52aeaa7d4284209.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_off00005093.bin
9908306c7e5fae9a41a53f768333591303da707e7419b67b1dadbd17b8648199		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5093 5400 bytes
font_01_sfnt_off000062f5.bin
72f3057ea0bd7e51bda4f8eee49bdfcfd2600487cda70f8483e1086faaec6ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 10264 bytes

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