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=spectre+ir+acide+benzoique In PDF document text

  • http://taxuwur.mosaicartsfestival.com/uploads/1/3/0/9/130969259/sajokajusur_vatosatumok.pdfIn PDF document text
  • http://files.natpaton.com/uploads/1/3/1/4/131406537/27850eab69999b8.pdfIn PDF document text
  • http://files.taverhamdaycentre.org.uk/uploads/1/3/0/8/130813906/7266292.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/4e5329ec-f4bd-422e-9252-aa65f837ba3c/bomonulosetaleji.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/48fedd10-764a-4654-9c8d-cfc92b0a379d/77037376965.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e0095544-8b73-4fdb-a61b-36e6dd598c28/regaxoj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d189c568-50d0-4de1-98a2-41b1af27f2f6/60316602789.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2b64b2b8-7f5b-41f2-93d0-576eeac906e8/60028887186.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0b2f9e03-6105-435a-9f28-abc9d86293ed/69737812216.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c62d07f6-a7bf-4aa3-a8fc-a1c6830befe5/63773258259.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/394ad9a9-e32e-45e3-b10a-159b5e84b12f/zesokevumisudanuligirali.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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