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=summarising+guided+reading+activities In 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/dd580f46-7e53-4c45-9a72-e5f3be90dff3/92192619896.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6bcc9495-f956-4df5-828e-30e8c73a3462/37162850638.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3968654b-184c-4578-8b30-c0bd3495aeee/29918831422.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/formato_para_plan_de_marketing.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0e8979f9-0a69-4b76-b1fa-ca678fd95484/32271499958.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3e00428a-b881-4b90-bd2a-f1f7e4445853/91345203908.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3fadf62b-8cfc-404b-ace1-a7baaeea9923/12913296725.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3ef3f46a-2485-4eaa-be9a-333aa80ad351/99307361070.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e37ac84b-881e-4548-9868-93791ac14480/zuwurivezimofigil.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bf26ae47-2a1e-420f-b075-976ae00c0175/lanisubekisowafar.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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