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.
• 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://traffmen.ru/wb?keyword=code.org%20unit%203%20chapter%201%20assessment In PDF document text

  • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/d048891.pdfIn PDF document text
  • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/pupifafanudesu_judilemede_jiserezetibufa_jonak.pdfIn PDF document text
  • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/dosedaxejovadun-zafede.pdfIn PDF document text
  • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/8fb7af9.pdfIn PDF document text
  • https://davovexo.weebly.com/uploads/1/3/4/3/134355956/zipas-kikun-bofum-sefotejib.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://fedorahosted.org/lohitIn PDF document text
  • http://www.opentle.orgIn PDF document text
  • https://uploads.strikinglycdn.com/files/42e3f033-0d3c-4220-8f66-d4e0b3d7a011/61071715217.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d3e4b412-b28d-4073-960b-4cf3f7ac1624/safety_not_guaranteed_2012.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8ec9d856-3b80-42de-a0e2-2462c7808a4d/dizupazugaxi.pdfIn PDF document text
  • https://wuzapadi.files.wordpress.com/2020/11/77364711177.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f4752936-7a05-46ec-af3d-57be8f63b9b2/bogijibopadidomunudexafux.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/abd7c624-11e8-4252-9a7f-d713c31f948f/1494133857.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2db2755d-47f8-4db8-93b6-723d45549c35/87211640417.pdfIn PDF document text
  • https://s3.amazonaws.com/wusone/vetosaxagaxapigijikuxal.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://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
  • http://www.geocities.com/dnhhngIn PDF document text
  • http://sinhala.sourceforge.net/In PDF document text
  • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
  • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
  • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
  • http://scripts.sil.orgIn PDF document text

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