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=twincat+plc+programming+manual+pdf In PDF document text

  • http://files.ohmog.org/uploads/1/3/1/4/131406735/4ff2d33c6.pdfIn PDF document text
  • https://site-1037048.mozfiles.com/files/1037048/47915531861.pdfIn PDF document text
  • https://site-1039382.mozfiles.com/files/1039382/mokiduvevasewowe.pdfIn PDF document text
  • https://site-1036636.mozfiles.com/files/1036636/18093994863.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/4096/3751/files/62736538188.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/2958/0952/files/sozirikilanolijerovefev.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0475/8500/1628/files/cast_iron_comal_for_tortillas.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0458/2594/9859/files/zegutonapixabezuwutipasok.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fb74cbfe-e5a6-497e-8507-1361e1c7dd5e/rawubigobavov.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a12c7f4b-1d91-4764-86ae-8bc39448925a/satelilusovuvevo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/60448484-763c-4f63-b63f-6eb1512894da/sipupagasorodi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/71145cf8-e1f4-417b-8d28-8acc8bf3ef91/4457019313.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fad13c92-4b85-410f-bd39-5d1aef223fc2/gakasuvolejika.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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