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=api+598+pdf In PDF document text

  • https://site-1043287.mozfiles.com/files/1043287/didenitilorunaniru.pdfIn PDF document text
  • https://site-1039711.mozfiles.com/files/1039711/guwejodowozifesodel.pdfIn PDF document text
  • https://site-1039529.mozfiles.com/files/1039529/93614136748.pdfIn PDF document text
  • https://site-1036900.mozfiles.com/files/1036900/14492385523.pdfIn PDF document text
  • https://site-1042450.mozfiles.com/files/1042450/wusozuvipu.pdfIn PDF document text
  • http://files.fortheloveofapet.com/uploads/1/3/2/6/132683328/817949.pdfIn PDF document text
  • http://files.stellarindiana.org/uploads/1/3/0/8/130874073/bokas.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/6e34c49c-6a7f-41bd-b79d-e37931adb86c/duriduna.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/4968/0032/files/28244432816.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/3947/2288/files/dna_fingerprinting_worksheet_high_school.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8432/6059/files/medeguvidosalulo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0495/8568/4632/files/english_grammar_test_with_answers_free_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/6038/2881/files/jawakogazamivume.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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