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://traffset.ru/aws?keyword=fruitland+middle+school+staff PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4384649/normal_5f8ee065d8020.pdfIn PDF document text
  • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/rezoripun.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369166/normal_5f87d4cf7e865.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377120/normal_5f907832b0cb1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4456671/normal_5fa141b496849.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/ed59da23-c3a9-49c2-87cd-01a6f47e3ec4/19229141125.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2ffdc038-9258-493e-bfc9-ce98b8f88162/16x20_shed_kits_with_prices.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2bc12db9-b4b4-4729-8fb8-3dabe27308d1/dukarorupogi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/457df74d-a8e9-4aaf-b0e4-5eb188c2a71b/pobasizubezeloledofuderir.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d42a0a53-9f41-45fc-a33e-8ff148c82e36/fidezavapos.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/365a2f4b-a0d4-4588-b596-b93aedbce881/7090493514.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5ddad70b-b0b3-4cc7-8eab-cc88a304a7b2/activador_para_office_2016.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dcde72e8-2bb5-4421-b3c5-5b96634225e9/96626531192.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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