Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a7b4473e21db8f4…

MALICIOUS

PDF

32.2 KB Created: 2020-05-26 05:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69342e11966aaae454a1af089477f906 SHA-1: d21bbd40f20afff329f392de1b238f985d87e129 SHA-256: 8a7b4473e21db8f4c8c3c6f2146a55f3e1817262e0f17011f3af5c176b0b98e3
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains URLs pointing to a link farm hosted on various domains. These links likely lead to further malicious content or phishing pages. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://jcfoamer.com/uploads/1/3/1/8/131871825/131871825.html#birthday+weekend+itinerary+template
    • http://bugs.ikiru.org/uploads/1/3/0/8/130814402/nupaxe_risazimopaz_kobogabowu.pdf
    • http://sunsetcafechicago.com/uploads/1/3/0/3/130313093/e130957653.pdf
    • http://mtlemmonskylodge.com/uploads/1/3/0/6/130605390/lowodewofopup.pdf
    • http://lunalolasc.com/uploads/1/3/0/7/130739020/fitupadil.pdf
    • http://bluearchconsulting.com/uploads/1/3/0/3/130323106/wafofojiv.pdf
    • http://castellumcareer.com/uploads/1/3/0/8/130814423/6515326.pdf
    • http://seraphimatx.com/uploads/1/3/1/3/131398374/7293126.pdf
    • http://puravegan.net/uploads/1/3/0/5/130542982/xalezizoleni.pdf
    • http://theycallmefrida.com/uploads/1/3/0/7/130775563/4025806.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_off000053b8.bin
d5832fe572fdd4c10ae91bb1fc4273e5425690d371f92c47a896cf065bab7a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B8 9960 bytes

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