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/strik?keyword=download+firefox+apk+free In PDF document text

  • https://cdn-cms.f-static.net/uploads/4402289/normal_5f91a47d88e90.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409811/normal_5f93087c8dfc6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366000/normal_5f9cebbc67d01.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382778/normal_5f9960f32eab3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382781/normal_5f95f739e68b5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408995/normal_5f99e9c16e711.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/jagux/hunter_college_calendar_fall_2018.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b7d629d6-2e12-47e4-bcaf-595b87f8eb12/mixivarojozup.pdfIn PDF document text
  • https://s3.amazonaws.com/remoxi/fixazexadiv.pdfIn PDF document text
  • https://s3.amazonaws.com/tokafanawa/47292426653.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/946c8ae5-3c71-43dd-af7c-476e7f799d01/fiwisomapekusujit.pdfIn PDF document text
  • https://s3.amazonaws.com/guvovigo/lenufejawe.pdfIn PDF document text
  • https://s3.amazonaws.com/zategafozasiru/ruzoxolufisaniretelo.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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