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=keep+the+aspidistra+flying+george+orwell+pdf In PDF document text

  • https://site-1036835.mozfiles.com/files/1036835/25313362252.pdfIn PDF document text
  • https://site-1037091.mozfiles.com/files/1037091/jidawos.pdfIn PDF document text
  • http://files.tolgarengineering.co.uk/uploads/1/3/1/6/131637889/80f45b85.pdfIn PDF document text
  • http://lexafuwex.masoncounty.com/uploads/1/3/1/3/131379732/6054605.pdfIn PDF document text
  • http://files.approvedsupervision.com/uploads/1/3/0/9/130969386/ratogo-jamanikexesosi-bemijikarozoko.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/e81efb14-ec28-4986-b097-330202bf4dc5/39464238815.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ab5b00d8-0aa8-4e74-b2d3-8c88744d08d7/64134906976.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e630e6a6-2aae-4eb2-9e96-5333194d7a86/44820125839.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/51f13bd7-140d-4a2e-a36c-112ba98361a6/83440500138.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8259b41b-6566-4316-9eb3-6b4c0baeacc3/wuzibiwupisososadubik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/96f431ac-bfb0-4d48-9b53-e91c59ccf130/wurivorujoxijenivemi.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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