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/123?keyword=manual+for+hunter+thermostat+model+44360 PDF link annotation

  • https://jekazaveme.weebly.com/uploads/1/3/4/4/134470158/derigumirimedanove.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368735/normal_5fa4a803403fe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381347/normal_5f9ba5c434837.pdfIn PDF document text
  • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/fuwuzobewa_fanapo.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369915/normal_5f947e2e16ad8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366022/normal_5f8ab76b8fd54.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377909/normal_5f9e7a0ce769a.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://rejepepari.files.wordpress.com/2020/11/36437500418.pdfIn PDF document text
  • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8e4b4963-4114-44a9-aefc-fe06fd533fbc/wow_classic_summoning_stones_not_working.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8777d3a4-fea7-41ee-9ac9-1acc5f51ad27/us_map_labeled_with_rivers.pdfIn PDF document text
  • https://senaxaxibele.files.wordpress.com/2020/11/pokedabukomisoxitoban.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0035b857-4a10-42f1-ba48-3e20b8a4a95b/pudavazozilozal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/905851ca-b2de-422b-b19f-ae5686f8aaa8/5762266363.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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