Malicious PDF — malware analysis report

Heuristics 5

• 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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://calaverascaravan.net/uploads/1/3/0/6/130639506/130639506.html#princesa+de+un+cuento+de+hadas+vallenato PDF link annotation

  • http://12ministries.org/uploads/1/3/0/4/130436343/75a9e2.pdfIn PDF document text
  • http://lensleydesign.com/uploads/1/3/0/5/130550772/wirefu-pelufum.pdfIn PDF document text
  • http://mntpaperplastics.com/uploads/1/3/0/6/130604682/6032255.pdfIn PDF document text
  • http://arlocksafe.com/uploads/1/3/0/6/130603928/8393867.pdfIn PDF document text
  • http://lazylstudio.com/uploads/1/3/0/7/130739156/joruwakapam-sajotamubufem-vikol.pdfIn PDF document text
  • http://solit.studio/uploads/1/3/0/4/130489933/1433176.pdfIn PDF document text
  • http://secondhandvehicles.ca/uploads/1/3/1/3/131380436/nenowonilukib.pdfIn PDF document text
  • http://silverbackbenefitsadministrators.com/uploads/1/3/0/2/130288386/7c9ec01.pdfIn PDF document text
  • http://goldandgritnyc.com/uploads/1/3/0/6/130620759/5930b4a0560.pdfIn PDF document text
  • http://9f60ced015.com/uploads/1/3/0/2/130272638/depaw-varafadidemetak-lugaveju-texig.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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