Malicious PDF — malware analysis report

Static analysis result for SHA-256 537b523d02f787da…

MALICIOUS

PDF

37.7 KB Created: 2020-03-25 08:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 81b99bd173b93237d3f11bf02642e0bf SHA-1: 30c71934a6a05ca0a9316d3424edad1e7b756849 SHA-256: 537b523d02f787da4cccf8dfc7c54589024dab63fb5ce8aa01142fa46fca8093
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text and references to 'wkhtmltopdf', indicating it was likely generated programmatically. The primary intent appears to be directing users to these external sites, which could host malicious content or phishing pages.

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://humannaturefoundation.com/uploads/1/3/0/8/130813790/130813790.html#korg+triton+prox+88+specs
    • http://robot-detective.com/uploads/1/3/0/5/130550750/3330775.pdf
    • http://karinamadrigal.com/uploads/1/3/0/6/130639852/padigolenelu-retor-gegonowepim.pdf
    • http://northernyoga.ca/uploads/1/3/0/6/130620601/f4ae2a8cbe0bdca.pdf
    • http://www.nourishingpacificnw.com/uploads/1/3/0/9/130969176/nerarigemikopijaduwa.pdf
    • http://www.shockbuilder.com/uploads/1/3/1/0/131070171/f8f07349.pdf
    • http://littledoveconsultants.com/uploads/1/3/0/6/130604642/3764388.pdf
    • http://daanvanirsel.com/uploads/1/3/0/3/130313572/5637555.pdf
    • http://wsgwt.com/uploads/1/3/0/7/130775279/bixavodilejegi_wukor_roninelebizaz.pdf
    • http://justforyouspa.com/uploads/1/3/0/6/130639038/lajekora-dujema.pdf
    • http://www.lienphotography.com/uploads/1/3/0/6/130620902/fixojixav.pdf
    • http://melodymurphyphotos.com/uploads/1/3/0/9/130969477/gupejudekogasi-dixonesilu-kijanirono.pdf
    • http://revkillanc.com/uploads/1/3/0/9/130969372/6675942.pdf
    • http://laurenvanmullem.com/uploads/1/3/0/4/130436127/a1ba15b9.pdf
    • http://shawnakirby.com/uploads/1/3/0/6/130621333/6516925.pdf
    • http://mta-sts.mx.omgp.org/uploads/1/3/0/6/130639510/101a21b5ce8d.pdf
    • http://seannxenja.com/uploads/1/3/0/6/130605178/9038441.pdf
    • http://www.lionsdenergy.com/uploads/1/3/0/4/130489363/levemozosojuw.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_off00006cb8.bin
2aeba32a2a3b411c88f83d42a899382fa57affa46d8d772a6caa307eab859a14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB8 7352 bytes

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