Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2de8836c26b046…

MALICIOUS

PDF

26.2 KB Created: 2020-04-29 19:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3c55d8a3c8296777a6e024f3e30b1ba2 SHA-1: 737bc3e4368944e92d5ae666d6a689b74b83dc35 SHA-256: ac2de8836c26b046c43daaf6e0e4f714d49f80ae7b5edab80b19d65c6661164f
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 documents hosted on different domains, suggesting a link farm or content distribution tactic. The document body contains metadata related to 'Aisin clutch disc catalog pdf' and 'wkhtmltopdf', which appears to be a lure or camouflage for the underlying malicious activity. 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://skinspiritlife.com/uploads/1/3/1/3/131381112/131381112.html#aisin+clutch+disc+catalog+pdf
    • http://jifinancials.com/uploads/1/3/1/3/131380052/jibamomirog_kexetopo.pdf
    • http://megansmode.com/uploads/1/3/0/5/130551006/7ad1f086a1d.pdf
    • http://4metrainingpro.org/uploads/1/3/0/6/130639263/fa1ea3e45a858f.pdf
    • http://kindkvist.com/uploads/1/3/0/8/130814085/7587078.pdf
    • http://cariboutraduction.com/uploads/1/3/0/6/130620195/7575076.pdf
    • http://performyourbestsportsmassage.com/uploads/1/3/0/5/130588821/poroman.pdf
    • http://dbpstockfootage.com/uploads/1/3/0/6/130604770/figedogiv.pdf
    • http://celestialmochi.com/uploads/1/3/1/3/131398292/lojuvibovaton.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_off00004492.bin
20a7089955eadc80859dd6103b6a9d892f3d806af988799fbdbf20552f836814		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4492 6352 bytes

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