Malicious PDF — malware analysis report

Heuristics 4

• 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.
• 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/aws?keyword=u+pecku+praha+vysocany In PDF document text

  • https://cdn-cms.f-static.net/uploads/4405652/normal_5f93a5a73e3ee.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404976/normal_5f994966310bc.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/0fd8983c-ab6d-460c-9912-1cb990dae1c9/motufojozasijen.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ed3f2922-8c68-4aa6-b582-1e62b34b4e5b/zikuwajibanulosazimuz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1dfa8bbf-6f09-49d5-ba64-2c245bf27757/98857661401.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9efa100a-6a92-4e3e-8b62-f7c68515ce33/sodesudobagufibigitumi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7b94e701-6717-4e9d-a370-108f4e88085e/bubojuzobukajunituzusev.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8878/2505/files/50617296599.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0268/8840/5191/files/iec_62443_standard.pdfIn PDF document text
  • https://s3.amazonaws.com/kudefem/biwenum.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/18fbecde-2c49-4edb-9106-e92de41fbcfe/bare_area_of_liver.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/2098/2693/files/jirujakudu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/239432fe-aac0-4b73-b830-b84c408c7688/789928610.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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