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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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 https://trafficel.ru/aws?keyword=wlox+news+live+streaming PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4380692/normal_5f8ce704c4568.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380068/normal_5f90fc2f2317c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420927/normal_5f96e5f1cc127.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370989/normal_5f8a109076a50.pdfIn PDF document text
  • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/fabokufavibapafeb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369764/normal_5f87e50ea4bfb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365646/normal_5f8705a4c2293.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376850/normal_5f8e776b3cf2f.pdfIn PDF document text
  • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/c62564350.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370062/normal_5f87f577e3dfb.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/dbd07fd9-6324-4d83-8f35-7c17cb233794/12359932206.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7e69ace6-c208-40e4-8c01-e0e65a533db8/53597956082.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/72b226ad-20aa-44fd-99b0-e0cedbffe74a/rakefanovose.pdfIn 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
  • http://scripts.sil.org/OFLIn PDF document text

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