Malicious PDF — malware analysis report

Heuristics 4

• 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• 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=calculo+estructural+ingenieria+civil+pdf In PDF document text

  • https://site-1036826.mozfiles.com/files/1036826/perunonalovijozi.pdfIn PDF document text
  • https://site-1036730.mozfiles.com/files/1036730/79527061035.pdfIn PDF document text
  • https://site-1036962.mozfiles.com/files/1036962/xufosamuzupa.pdfIn PDF document text
  • https://site-1036962.mozfiles.com/files/1036962/wudimebuvitapuwabimukaw.pdfIn PDF document text
  • https://site-1036812.mozfiles.com/files/1036812/kutizusum.pdfIn PDF document text
  • https://site-1036965.mozfiles.com/files/1036965/46382624039.pdfIn PDF document text
  • http://robufeveb.carnegiereiki.com/uploads/1/3/0/8/130813821/nemojegefawilotisefi.pdfIn PDF document text
  • http://files.taofineart.com/uploads/1/3/1/3/131381288/8674775.pdfIn PDF document text
  • http://mebetajim.bluethunderbirdwoman.com/uploads/1/3/0/7/130739892/ruwetezare.pdfIn PDF document text
  • http://files.entropicj.com/uploads/1/3/1/3/131398246/gipedepotara_nodogav.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/01b775ce-ca8e-45f9-9db7-f79a2ec627d3/wesis.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1c28b3d0-ae15-44ea-b171-89e2c5006ddc/pekumulukisezonovaretej.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/338654ec-2399-4218-931c-f40fd15a9298/25871125122.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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