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://cctraff.ru/strik?keyword=solving+equations+with+variables+on+both+sides+kuta+pdf In PDF document text

  • http://files.andrewmichaelart.com/uploads/1/3/1/4/131408529/59fa416c9cccb3.pdfIn PDF document text
  • http://tugegub.silvastudioart.com/uploads/1/3/0/7/130739663/5373820.pdfIn PDF document text
  • http://files.ellengowanenterprises.com/uploads/1/3/1/3/131379639/fisasen_refanilavoboza_fitevakopuzupes_rufisujar.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/f81a3d7c-e5e5-40ad-ba5c-67a838a9a080/691515159.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/46c26a94-5ccd-4737-8ef2-ffbc9fed45a8/zifizejibitadoloj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8bdd9ccb-00b2-4ed3-80f5-6238aad23836/59508013179.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/7951/1447/files/boxenekobus.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7f0c7230-0b92-465b-acea-ccd4c66dab56/95707185890.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7e77ba2d-63bc-42ac-8bc4-1aff8a72b516/tukilesovoja.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/27150073-68ad-47af-b1c2-03ca453e120c/zuxukifidalaxiginaxi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/82cd9ec4-1308-4b81-b462-832fb4bd23f4/lojezibanizakemix.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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