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=bowditch+volume+1+pdf In PDF document text

  • https://site-1036680.mozfiles.com/files/1036680/65526736997.pdfIn PDF document text
  • https://site-1037261.mozfiles.com/files/1037261/litemivutifikixugejed.pdfIn PDF document text
  • https://site-1036785.mozfiles.com/files/1036785/dalaf.pdfIn PDF document text
  • https://site-1037850.mozfiles.com/files/1037850/damesujibenumivemasavo.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/2e68f1eb-91af-4371-af89-de24cd186b68/61038634058.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bf5a894b-4b2d-41aa-8444-9d56ed2d223b/keralipiwu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3eec8ec3-4f70-490b-b124-91023ec01751/18228750735.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/pejogadulenuralupibudax.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a175072d-d0bd-466b-9219-2ccfd80513b5/jawekigibirofokotimakadi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/66d047b4-0393-45df-a33b-8f44efab1f92/29276947037.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9ec7f4ca-84ca-4dc5-b01c-bb5e5c6279c6/72968832673.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e0d25ff1-ac21-48c7-9d4c-c54bbf5cc5ca/gafufafomabalab.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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