Malicious PDF — malware analysis report

Static analysis result for SHA-256 40f4a286a1d3115a…

MALICIOUS

PDF

33.6 KB Created: 2020-05-27 03:05:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e4cdf2505cdfc545347705303a6c108 SHA-1: b09700d973c4c8804e741af9bdd5bd019be4fb25 SHA-256: 40f4a286a1d3115abf74107598204aeea3988833d3fd3519df44ee4e3a564fa0
62 Risk Score

Malware Insights

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

The PDF file contains numerous external links to other PDF files hosted on various domains, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially garbled, includes the phrase 'Caracteristicas de contabilidad financiera' and references wkhtmltopdf, suggesting a potential lure related to financial accounting. The primary intent appears to be directing users to a link farm, likely for SEO manipulation or to serve as a distribution point for further malicious content.

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://thepoeticpreacher.com/uploads/1/3/0/5/130539516/130539516.html#caracteristicas+de+contabilidad+financiera
    • http://timbeddingfield-org.cedarhillsbaptistchurch.org/uploads/1/3/0/7/130739024/muxevis-zodilefo-pumov.pdf
    • http://tjpmealprep.com/uploads/1/3/1/0/131070972/1828154.pdf
    • http://danbishopband.com/uploads/1/3/0/5/130588304/gijanarojej-bofiwinif.pdf
    • http://town3r.com/uploads/1/3/0/5/130551342/4221924.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_off00005cfa.bin
cb163abb24d1b1ac8978a9b7dd12e34cc0a3a8a3d21f3c2bca888d9b29099b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFA 9540 bytes

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