Malicious PDF — malware analysis report

Static analysis result for SHA-256 f83967bc24e5eaaa…

MALICIOUS

PDF

35.7 KB Created: 2020-03-31 00:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6a81e7ec99e70068613252223c6dfa66 SHA-1: 845483e1de15362602fb584fbd660b66ca6df722 SHA-256: f83967bc24e5eaaacd682ceb042086b74908835ddc7f236ec2444208b20a1fc0
62 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which point to PDF files hosted on various domains. The document body mentions a medical topic in Spanish ('Riesgo de alteracion de la diada materno fetal gpc'), suggesting a lure to entice users to click on these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, likely for SEO manipulation or to distribute malicious content across multiple domains. 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://morethanjustaface.nl/uploads/1/3/1/1/131163695/131163695.html#riesgo+de+alteracion+de+la+diada+materno+fetal+gpc
    • http://mta-sts.proformancehealthaz.com/uploads/1/3/0/5/130543945/457422.pdf
    • http://3treecoffeeroasters.com/uploads/1/3/0/8/130874218/3650485.pdf
    • http://pelagiussociety.com/uploads/1/3/0/6/130605119/mopebu_mixasusowoli_vawuxugo_kewive.pdf
    • http://giv-ng.com/uploads/1/3/1/3/131383657/gupomub_samazi_punawu_perubogop.pdf
    • http://budgetboater.com/uploads/1/3/0/7/130775921/wiluviz-pilupubibapiz-rekov.pdf
    • http://lugainsurance.com/uploads/1/3/0/6/130639653/462fd433311.pdf
    • http://power2bernie.org/uploads/1/3/1/4/131408666/zovosimazuk.pdf
    • http://38brookford.com/uploads/1/3/0/5/130590297/bezutasajesiwe.pdf
    • http://hautehoundz.com/uploads/1/3/0/6/130620542/8800687.pdf
    • http://connectorart.com/uploads/1/3/0/6/130639373/kejizoxavokata-givevazawotavod-xixikez-rexigaw.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_off00006373.bin
f36f00d6f7e95c5e3d39de87d3512b8469428de1b7c129dfa3b495bbf47f1bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 7592 bytes

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