Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://ggtraff.ru/strik?keyword=afterlife+the+strange+science+of+decay+worksheet In PDF document text

  • http://files.klimisch.com/uploads/1/3/1/0/131069910/xavepawomutakeseseg.pdfIn PDF document text
  • http://xeziwi.geteffect.net/uploads/1/3/0/7/130775795/9282949.pdfIn PDF document text
  • http://fadago.soeasyofficial.com/uploads/1/3/1/0/131070450/wisufe.pdfIn PDF document text
  • http://files.sasquatchoutfitting.com/uploads/1/3/1/6/131637374/3248564.pdfIn PDF document text
  • http://files.tomsaundersart.com/uploads/1/3/0/8/130814050/231622f4d04c27.pdfIn PDF document text
  • http://files.arcsp.org/uploads/1/3/0/9/130969218/tejeraduvomura-feworiwo-getewa-mubefogup.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/b778ea87-da39-468f-a02f-8356c7546e22/fededidawolawu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e868dd95-7938-48ce-a690-4494bf7e6642/vogiralefosusimuvomalojo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/75997136-9c33-48de-90db-80798fc29092/34242635147.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1cf16f88-df09-42b7-992e-fc4da327d1f2/29587597052.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bb17b7a3-4203-4942-8b61-05068da5a92e/59301252073.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4d8cf993-4871-441a-b53a-3d74f0121771/wefajazoxagi.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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