Malicious PDF — malware analysis report

Static analysis result for SHA-256 99d12f0cba6e6622…

MALICIOUS

PDF

38.4 KB Created: 2020-03-25 08:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ad59963546048ba4156fb1ef6e7247ab SHA-1: 88d60c010cb037fe8abc80d1ec50bad6e1fb8f5d SHA-256: 99d12f0cba6e66223e51d7358a851874ed19c36afe1bf17972905a5cd7897658
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. The document body, though partially corrupted, contains text related to 'mental agility exercises for preschool children' and includes URLs that point to other PDF files hosted on various domains. This suggests a lure to drive traffic to potentially malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://thefunkyfest.com/uploads/1/3/1/3/131383604/131383604.html#ejercicios+de+agilidad+mental+para+ni%C3%B1os+de+preescolar
    • http://mingalarfoods.com/uploads/1/3/0/4/130436451/4df80ad9649.pdf
    • http://wholehealthdiscoverycenter.com/uploads/1/3/0/5/130550944/vunizuzevebujo.pdf
    • http://www.sleepvillecanada.com/uploads/1/3/0/6/130621443/4ff049c29bb7c.pdf
    • http://washingtonestatestransport.com/uploads/1/3/0/6/130621051/7d5860.pdf
    • http://gadgeriffic.com/uploads/1/3/0/3/130313221/rolakapukafusobig.pdf
    • http://daybreakerstest.com/uploads/1/3/0/5/130550951/9b48e549760de5b.pdf
    • http://nl.intothesails.com/uploads/1/3/0/7/130739174/4434265.pdf
    • http://christianmchoi.com/uploads/1/3/0/3/130379354/8889946.pdf
    • http://ikennaokafor.com/uploads/1/3/0/6/130604517/zukibupomisifob.pdf
    • http://longmica.com/uploads/1/3/0/6/130639358/2385954.pdf
    • http://www.theyouthchallenge.com/uploads/1/3/0/7/130776735/waxefopobikizarolez.pdf
    • http://www.banuelosrealestate.com/uploads/1/3/0/6/130605012/begojudu_xives.pdf
    • http://www.resonanceradio.co/uploads/1/3/0/4/130435697/0c82bcefa244fad.pdf
    • http://www.lauriceimani.com/uploads/1/3/0/5/130590496/5299796.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_off00006ba8.bin
5104c75d5473e75ab9c79529bf999370851db1820bdc44d1586059313cd305a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA8 8216 bytes

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