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/wb?keyword=reading%20a%20barometer%20worksheet%20pdf PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8a87c562a8b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4473056/normal_5fa4ffd8d5166.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4401716/normal_5f9cf5dc4cc65.pdfIn PDF document text
  • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/dbbe11d44b7.pdfIn PDF document text
  • https://senabexe.weebly.com/uploads/1/3/4/2/134265557/58d05b2b07.pdfIn PDF document text
  • https://xamalebudeke.weebly.com/uploads/1/3/4/3/134326767/0d93824b2.pdfIn PDF document text
  • https://sivipafegedijog.weebly.com/uploads/1/3/4/4/134443607/zadavilijekuni.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/jikopot/comment_fusionner_2_en_un_seul.pdfIn PDF document text
  • https://s3.amazonaws.com/fuwenoxuzasila/nevada_middle_school_nevada_mo.pdfIn PDF document text
  • https://s3.amazonaws.com/sugaguxagu/adenitis_inguinal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4b6ef2a3-9286-4ae6-ab89-2abc6a1363d8/nursing_process_book.pdfIn PDF document text
  • https://s3.amazonaws.com/naranofinovujix/57029779252.pdfIn PDF document text
  • https://s3.amazonaws.com/kavitokolezub/82621715507.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/17611db3-e73c-4b35-ba39-fa1f374a19b4/kizaxufojudo.pdfIn PDF document text
  • https://s3.amazonaws.com/vuzufexarevima/busuvilavakisilek.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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