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/123?keyword=ufc+235+live+stream+reddit+free In PDF document text

  • https://cdn-cms.f-static.net/uploads/4382617/normal_5f8eb3e000036.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004932.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004932.bin)
  • https://cdn.shopify.com/s/files/1/0268/8158/9432/files/all_movies_download_apk.pdfIn PDF document text
  • https://s3.amazonaws.com/resixexi/abordaje_de_kocher_codo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6082a950-60ab-4cea-8955-da7f0d1c2fd4/thule_truck_tire_chains.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b13d8fc1-ad0d-4d95-acf1-148d0599419e/zavupekupumar.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/038a5e52-c36b-4e26-96a1-009a4321fb75/essay_contests_for_middle_schoolers_2020.pdfIn PDF document text
  • https://s3.amazonaws.com/purixifusipelid/84142290018.pdfIn PDF document text
  • https://s3.amazonaws.com/mejediparaxi/stop_think_activity.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fd1ee9a8-9b5b-4fc5-a59a-e0b5a417c498/writing_a_letter_to_the_judge_for_leniency.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b76d5271-e901-4180-b540-d4643fcd9155/fizeb.pdfIn PDF document text
  • https://s3.amazonaws.com/felasorarabipis/pazevuzinuvovaseva.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 extracted file (font_00_sfnt_off00004932.bin)

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