Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e4776526b8370e…

MALICIOUS

PDF

40.7 KB Created: 2020-04-06 03:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5c3274dcc1a66db39ce54b0e5c7a15c1 SHA-1: e1d3795d260e42935634516f3cf1f99254764b3b SHA-256: e3e4776526b8370e1b2ced8a6d8b19b5e0a7be64fa22bd247e18121cf288ccfc
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links to various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. These links appear to be part of a link farm designed to attract traffic. The embedded URL and the numerous other PDF links suggest a redirection scheme, likely leading users to malicious content or phishing pages. No scripts were extracted, and the document body is largely unreadable binary data.

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://variedadeseltio.net/uploads/1/3/1/3/131383720/131383720.html#multiplication+and+division+of+decimals+worksheets+grade+6
    • http://vacavillelimos.com/uploads/1/3/0/5/130546024/giwimodori.pdf
    • http://okletstalkbusiness.net/uploads/1/3/0/4/130479123/fexesotefilekow.pdf
    • http://miyamoto1.com/uploads/1/3/0/7/130776498/4805834.pdf
    • http://sandhurstfunride.com/uploads/1/3/0/6/130639368/wuneguxuwuvas-vefiduko.pdf
    • http://cheerificcamps.com/uploads/1/3/0/5/130588943/cb5c4340.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_off00006d12.bin
77df87004427ff10aefa9520931aecb336446247a2606a1a768ed3fb5d759462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D12 8008 bytes
font_01_sfnt_off00008c0c.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0C 2652 bytes

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