Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4d88d65a09b687…

MALICIOUS

PDF

32.3 KB Created: 2020-05-15 08:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ed6ecebe5c00d16ef403792c096635c SHA-1: 981d3efaefee2e459b44a6116367c9e30b478751 SHA-256: 1c4d88d65a09b687d264d11a85afea44e3681e6fae80d21329a251480062b408
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it is part of a link farm designed to attract traffic. Multiple external URLs are embedded within the document, suggesting a delivery mechanism for further malicious content. The presence of these links and the nature of the heuristic strongly suggest a phishing or malicious content distribution attempt.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://sweetlysugared.com/uploads/1/3/0/6/130620438/130620438.html#tower+defense+2+mod+apk
    • http://rzfigueroa.com/uploads/1/3/0/2/130289367/mavawidimumudusovop.pdf
    • http://themexicankitchencompany.com/uploads/1/3/0/4/130436224/tarekuno_lesuxagelit.pdf
    • http://bestofthemenu.com/uploads/1/3/1/8/131858916/2273033.pdf
    • http://claireseniorproject.com/uploads/1/3/0/8/130813651/9216832.pdf
    • http://tranquiloaksnubianranch.com/uploads/1/3/0/5/130590092/nijusoxu-vupugufigixos-gededizibozemi.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000543d.bin
6c93e34a91cfb776e383b565fa29e34043b73d96df2cfcc1a9628d32a604f95d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x543D 10140 bytes

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