Malicious PDF — malware analysis report

Static analysis result for SHA-256 b175302c088b3347…

MALICIOUS

PDF

29.8 KB Created: 2020-04-12 17:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 62a0d42c154833e9cc1d139d9aa2fff3 SHA-1: ef5d92ad645535e4214671344c7008e0f9839fa8 SHA-256: b175302c088b3347998a36437b43ee2bfc8fb91c391de9c0f2ab9ae96654a64f
62 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous external links to various domains, with a critical heuristic firing for PDF_SEO_LINK_FARM. The document body contains garbled text and a reference to 'Pentatonix christmas song white winter hymnal', suggesting a lure. The primary intent appears to be SEO manipulation or redirection through a large number of embedded links, rather than direct execution of malicious code within the PDF itself.

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://masonleigh.com/uploads/1/3/1/3/131382486/131382486.html#pentatonix+christmas+song+white+winter+hymnal
    • http://spainicnaindo.com/uploads/1/3/1/0/131070452/joxewinebapaxufos.pdf
    • http://thepuzzledlady.com/uploads/1/3/0/3/130313307/gerixikuleleledobos.pdf
    • http://campingwithjoe.com/uploads/1/3/0/5/130588805/238304431f410.pdf
    • http://stephaniemielcarek.com/uploads/1/3/1/3/131379361/9507330.pdf
    • http://younggroupofcompanies.com/uploads/1/3/0/4/130488396/34fe2cad48.pdf
    • http://kucintabooks.com/uploads/1/3/0/6/130620948/juzagu.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_off0000505c.bin
22c2695b19d53471b77621651f644cf429473c2284ec8d09880b25a36bc454a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x505C 6756 bytes

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