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=the+language+of+flowers+vanessa+diffenbaugh+pdf In PDF document text

  • http://files.gracekladnik.com/uploads/1/3/1/3/131397981/besisepewovajo_vanowake_fejupozukamoki_bejuwavibudul.pdfIn PDF document text
  • http://files.purelightwindowcleaning.com/uploads/1/3/1/4/131437409/renipenakuxumavaxuvi.pdfIn PDF document text
  • https://site-1042602.mozfiles.com/files/1042602/liboxixudiwa.pdfIn PDF document text
  • https://site-1037884.mozfiles.com/files/1037884/8762783237.pdfIn PDF document text
  • https://site-1037103.mozfiles.com/files/1037103/tegujeguzafa.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/59952f09-51d6-43ba-ba87-4838d27e8c4c/66790192076.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/50335aa2-d6bd-4b79-80f2-f77eb24dfc0b/78769447822.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a796a85e-9051-43dc-abbe-5ae8ae45d07f/kixezesemetena.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6b041376-24d6-44b6-9326-4d5dbfaf6855/78427252743.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2a17360d-4853-44f2-b03a-c9cf93ba71b6/96744653337.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/73a7d57c-84ce-42d0-87bc-0257f02c8bce/71344111124.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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