Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69ef2d27b7007ca…

MALICIOUS

PDF

47.2 KB Created: 2020-08-23 16:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6573906b93fa6e68239ae8410a289e SHA-1: d297e473b0fe779cbdacee3973a254243421686f SHA-256: b69ef2d27b7007cacef7aa151c6f96b9d5effdf98ed0584f64b85739a4d21335
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to 'uspstf guidelines aortic aneurysm screening' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of urgency language further supports a social engineering attack.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=uspstf+guidelines+aortic+aneurysm+screening
    • http://files.goflowoccupationaltherapy.com/uploads/1/3/1/1/131164488/3ca8d81f723e.pdf
    • http://files.barbaraherzfeld.com/uploads/1/3/1/1/131164067/rerobakudo-ragitafosugu.pdf
    • http://files.thefancyhedgehog.com/uploads/1/3/0/7/130739593/daduwuwawigino_wodawonarixa_jasotojanupove.pdf
    • http://files.911bodyresq.com/uploads/1/3/0/7/130776118/natarudul-wasawebi-pifag-nisaneneduk.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/bubifisujukoxibofome.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/wolejabefopiduzisanu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/karofonarebixopakopuwun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5280/files/63195168927.pdf
    • https://cdn.shopify.com/s/files/1/0461/8233/4617/files/bexuviduxud.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/59468443733.pdf
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/tezudutuzatakizegavev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/nadel.pdf
    • https://medlineplus.gov/aorticaneurysm.html
    • 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_off0000787f.bin
dd2a3516fffbda04596053d7c572017a2fcea144727f801633cd4544bfc5619c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787F 5568 bytes
font_01_sfnt_off00008b59.bin
1c1d2eadfb8dbac8dad12030bbf981b6acf7b86247918ad82302aa44976c84b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B59 10668 bytes

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