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://ggtraff.ru/strik?keyword=caligrafia+gratis+pdf In PDF document text

  • http://lawirelo.cruxdesign.net/uploads/1/3/1/4/131437490/japonur_dupufo.pdfIn PDF document text
  • http://files.theunreached.blog/uploads/1/3/2/7/132740267/5028563.pdfIn PDF document text
  • http://files.madisondogs.org/uploads/1/3/1/8/131856415/4834808.pdfIn PDF document text
  • http://files.healthybalancedbodies.com/uploads/1/3/0/9/130969368/2711701.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/3a65ca66-76c5-4258-b07f-2a4f00f08272/24260040986.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d96ec5b-6498-4560-ac62-b6be646ca7f9/28807079561.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/09bbe7a5-0d55-41a9-86c8-0e60be61d417/22697077475.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/4536/7191/files/worksheet_punnett_square_review_answer_key.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/9675/1774/files/dok_word_definition.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/9093/0583/files/jiwameze.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0479/7612/0476/files/77563782381.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0462/0055/3635/files/boxipijugimemevavokezele.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/9529/4101/files/31379599701.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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