Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=spectroscopy+by+ps+kalsi+pdf+download In PDF document text

  • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8a1f5d4da9e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365591/normal_5f87030ec8941.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365626/normal_5f871e52874f2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369152/normal_5f8954674730d.pdfIn PDF document text
  • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zokare.pdfIn PDF document text
  • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wijigomofiweb_lotitosede_jukis_dirum.pdfIn PDF document text
  • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/144044.pdfIn PDF document text
  • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/busixakowun_zefisuni.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365662/normal_5f88d002878f8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373999/normal_5f88da886b582.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366327/normal_5f8789d354a55.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368746/normal_5f8892dd20141.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366655/normal_5f8754e41d107.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366357/normal_5f873ad62dbe9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366653/normal_5f8a5861a1c05.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0495/9174/6712/files/beth_chapman_weight_loss_cancer.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0495/4941/0456/files/mekovojav.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a99dca37-7c1c-4c51-b7cc-ae8f6da3ddc3/73131082459.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cf2a8f47-e6c5-47c9-9856-75b684fcb513/62806091971.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4e180151-912a-4f57-bc47-d4b9f5c0d4ed/11512251223.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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