Malicious PDF — malware analysis report

Static analysis result for SHA-256 2caf257d0f7f9299…

MALICIOUS

PDF

32.8 KB Created: 2020-04-24 02:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3d4151a455b01843948cd7619caeca87 SHA-1: 0a44b74a1d4410207f031bfe1fda4a6b1c5cd445 SHA-256: 2caf257d0f7f929976fab3e77187a30725ee66cb216def9004b7dc90c5f1faf6
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam campaign. The document body contains garbled text mixed with URLs, further indicating a non-standard or malicious purpose. No scripts were extracted, limiting the analysis of direct payload delivery.

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://pineapplecoffeeandtea.com/uploads/1/3/1/0/131071231/131071231.html#brother+dcp+l2540dw+manual+canada
    • http://bartreekmansarts.com/uploads/1/3/0/5/130550814/b82ccfa3ede7c4.pdf
    • http://weldingtradeschools.com/uploads/1/3/0/2/130272286/kazimomuvuwon.pdf
    • http://mixtapeandidentity.com/uploads/1/3/1/0/131070334/zerov.pdf
    • http://morselumber.org/uploads/1/3/0/6/130621765/ade9c4775a7.pdf
    • http://unitaxcpa.com/uploads/1/3/0/4/130476091/11a8c.pdf
    • http://ourcoffeyhouseblog.com/uploads/1/3/0/8/130813923/nimubapoxitimuda.pdf
    • http://benchmarkrealestatebrokers.com/uploads/1/3/1/4/131453256/8343193.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_off00005647.bin
065464280e904beaa62ac695886929e138ee6f94f59ebc7cf43a34dbaf84f920		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5647 9220 bytes

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