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=audio+in+media+pdf In PDF document text

  • https://site-1038532.mozfiles.com/files/1038532/53410403656.pdfIn PDF document text
  • https://site-1037149.mozfiles.com/files/1037149/64285024793.pdfIn PDF document text
  • https://site-1037196.mozfiles.com/files/1037196/mixafefeti.pdfIn PDF document text
  • http://pebomam.transformineducation.org/uploads/1/3/1/0/131071164/3229f7b47f23664.pdfIn PDF document text
  • http://files.the-marshal.com/uploads/1/3/1/4/131437886/vumunijesu-kilopuguwaro-pizovakotije-xilewunovixi.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/aafbbdb7-ff64-4e88-b020-f8631064fc74/38368552848.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5a36fce8-217b-40c2-b158-b227aa69255a/34741565600.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0ad5c9e2-7278-4946-8185-e9ebf490cd99/93057963865.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/9249/4486/files/natalie_next_to_normal_character_analysis.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/3671/0824/files/gexikujo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/67205209128.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/2289/5272/files/biblical_meaning_of_802.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0480/8353/3981/files/borderlands_2_the_bee.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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