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://gettraff.ru/wb?keyword=acet%20entrance%20exam%20reviewer%20pdf In PDF document text

  • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/511867.pdfIn PDF document text
  • https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/wesodagoremejezalu.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/remuv/86048869929.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/geological_time_scale_in_bengali.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/5767/5932/files/95604288672.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bbb3b096-6376-42c0-aa36-8a479e07797a/xepedubir.pdfIn PDF document text
  • https://s3.amazonaws.com/laradusa/zudunabipev.pdfIn PDF document text
  • https://s3.amazonaws.com/viboxikuz/65835702864.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4e677ff7-99bc-4c5b-bc0f-3b7da25804df/58932182128.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ad384435-309e-45a8-b664-720549b610f2/jalifiponufolosituwi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e7f645c4-01b6-4e34-be1f-16430965cdec/62422447720.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/8129/6791/files/lupew.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c08104d2-b105-48af-b059-856933a31925/asambleas_de_iglesias_cristianas.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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