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://gettraff.ru/strik?keyword=nilsson+riedel+electric+circuits+9th+edition+solutions+pdf+download In PDF document text

  • https://site-1040177.mozfiles.com/files/1040177/39756250164.pdfIn PDF document text
  • https://site-1038919.mozfiles.com/files/1038919/52397387950.pdfIn PDF document text
  • http://files.formulastudentusa.com/uploads/1/3/2/8/132815213/d658b4b2f81b.pdfIn PDF document text
  • http://gerifawo.cypish.org/uploads/1/3/1/4/131406893/1028151.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/5c5fc49f-4171-4965-93e2-4a5b3e34bea7/87126093871.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d2ef3f6-34a6-4435-a4c3-38b5049fc6ce/67184635017.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/800eda38-679a-41f4-809d-dd74486fbdfa/sozeguladozavojajunebi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bed03a8f-6a0b-46d5-a884-e7d61129b00a/16665148003.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f6cfe47c-b0d4-413e-aa06-0aa90585818a/dilaweliripedogopa.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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