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/pify?keyword=suelo+arcilla+limosa In PDF document text

  • https://cdn-cms.f-static.net/uploads/4403131/normal_5f9754803688b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381082/normal_5f8dd447a7b5a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4416656/normal_5f9886b4b9800.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371790/normal_5f92675e01634.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4386079/normal_5f94abaab3e96.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/634ff30c-5771-48e5-a959-83c2630fc858/20963569426.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/429be79b-b66b-400b-91e5-c4c8cb5aeca5/pakonatodetugetubuvu.pdfIn PDF document text
  • https://s3.amazonaws.com/suxiweke/can_you_cook_cucumbers_on_the_stove.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0503/2493/0728/files/napkin_table_setting_ideas.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/1229/1264/files/ib_biology_course_book.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/76fbbfc1-0158-4c64-b786-32b4c596846c/89433007758.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5b45c339-f931-48c1-8bf8-a826df3825df/polimeros_y_materiales_compuestos.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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