Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7618243ed947202…

MALICIOUS

PDF

37.7 KB Created: 2020-06-18 09:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cb49729852a0efd9e2ed3d2ec880cba SHA-1: 4b5965a0f60a1c6c23f42fe7fa4230b2503a4c43 SHA-256: c7618243ed947202a7a09bd68bf116975e889ce4f027506c2fc3fd5382cd0463
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 network. The embedded document body text, though partially corrupted, contains a URL that is also present in the list of extracted URLs. No scripts were extracted from this sample. The primary attack pattern appears to be directing users to a network of potentially malicious or SEO-manipulated 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://trikon-group.devsite-1.com/uploads/1/3/0/8/130814676/130814676.html#i+love+you+bodyguard+guitar+lesson
    • http://cpcontacts.diotechdata.com/uploads/1/3/0/8/130815059/5e398d1aae94f.pdf
    • http://mollyparizeau.com/uploads/1/3/0/9/130969760/5018733.pdf
    • http://allanhovi.com/uploads/1/3/0/5/130551264/3724108.pdf
    • http://decoradesignstudio.com/uploads/1/3/0/8/130873786/2037459.pdf
    • http://lepinbuildingblocksau.com/uploads/1/3/0/6/130620168/ganenunakekit.pdf
    • http://noreply-27.info/uploads/1/3/0/5/130541462/jinivafane.pdf
    • http://midwestundergroundinc.com/uploads/1/3/0/2/130289291/padaf.pdf
    • http://komercallc.net/uploads/1/3/0/7/130776754/sesise-lowakijo-magoxawobef-tetujo.pdf
    • http://webmail.winwithwill.com/uploads/1/3/0/8/130814219/dewegewadosa-bitiwixasetexak-laliti-zubub.pdf
    • http://rosecityinspections.com/uploads/1/3/0/3/130323811/besenogozifazaxezoj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005536.bin
e65b268bd848b5c84e131d0f803121ea862a652eaaa08376cb986bf74b03a7fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5536 5116 bytes
font_01_sfnt_off000066a7.bin
93db382e2f862cc5706f58537954fad102c0d79c985b98e0181b42f5741959e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 10036 bytes

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