Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5822b7117b4035…

MALICIOUS

PDF

42.9 KB Created: 2020-04-12 22:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6f0f76969e8b60627982aead188f2afd SHA-1: ac612c9f955166795f43777d2563cef6a5218763 SHA-256: fc5822b7117b40350110b5698dac36a85f7c7185a2675b1742abf11d3537d62e
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to manipulate search engine results or redirect users to potentially malicious content. The document body itself contains garbled text and a URL that seems related to medical treatment, possibly as a lure.

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://mdday.org/uploads/1/3/1/3/131398109/131398109.html#otitis+media+serosa+tratamiento+fisterra
    • http://lilianpoulette.com/uploads/1/3/0/6/130620412/rimitegevugitus.pdf
    • http://304america1st.com/uploads/1/3/1/4/131453329/437e16c6fd1.pdf
    • http://futuretideskona.com/uploads/1/3/1/4/131483337/e1f30.pdf
    • http://loveisvictory.ca/uploads/1/3/1/1/131163632/fetowakiratuweguwot.pdf
    • http://gilbertroofrepairs.com/uploads/1/3/0/6/130621331/5211507.pdf
    • http://annapurnacrafts.com/uploads/1/3/1/4/131453034/549e69b9.pdf
    • http://annapurnacrafts.com/uploads/1
    • 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_off00007c8c.bin
dc25db73cf1a01418e21ca3dd05c1bbd39c79190dc9fc875478db64a53df189d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8C 9256 bytes

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