Malicious PDF — malware analysis report

Static analysis result for SHA-256 926e6a3c40f52872…

MALICIOUS

PDF

39.7 KB Created: 2020-04-04 08:49:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7c9de31d65d5128395917e823bb0225f SHA-1: 3b8c591138ec5ffb149027babc5af643d3a4b3de SHA-256: 926e6a3c40f52872d272f8b675ee47b8ccd23dd13b24526ceb1769031f572b90
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the link farm attack pattern. No scripts were extracted from this sample.

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://ngnmcontracting.ca/uploads/1/3/0/5/130540699/130540699.html#libro+de+derecho+romano+oxford+pdf
    • http://straightlinepainting816.com/uploads/1/3/0/3/130379429/gagunet.pdf
    • http://londonvintageart.com/uploads/1/3/0/7/130775624/vikukotosamanu.pdf
    • http://gbubeeremoval19.com/uploads/1/3/0/6/130604028/noguroniponiwe.pdf
    • http://silk777.net/uploads/1/3/0/6/130622110/5028906.pdf
    • http://infinnerty.com/uploads/1/3/0/7/130775868/befoz-tadizafir.pdf
    • http://amybacon.net/uploads/1/3/0/5/130541004/5010281.pdf
    • http://orencostation.org/uploads/1/3/0/8/130813644/jusukojogaruzix.pdf
    • http://bionaturabotanicals.com/uploads/1/3/1/4/131406453/915a232634.pdf
    • http://rogerlouis-construction.com/uploads/1/3/0/6/130621055/zavesulegetadamo.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_off00006e7b.bin
23425770dc9389e479dd974b9cc34021f68c32f092b4473f9f330b690adc0d1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 9804 bytes

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