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://cctraff.ru/pify?keyword=lu+decomposition+calculator+non+square+matrix In PDF document text

  • http://files.baam.digital/uploads/1/3/0/9/130969154/mojakoxujixagu-funidira.pdfIn PDF document text
  • http://dukum.standrewsweb.com/uploads/1/3/1/3/131382406/4fb8c4e3d7.pdfIn PDF document text
  • http://lunubileb.firehawkllc.com/uploads/1/3/2/3/132303181/b95f119d822.pdfIn PDF document text
  • http://files.yeastlipidconference.com/uploads/1/3/1/4/131407028/nupiditixowaxawi.pdfIn PDF document text
  • http://files.charmedbordercollies.com/uploads/1/3/0/9/130969738/1553453.pdfIn PDF document text
  • http://gemubod.crafteli.com/uploads/1/3/1/6/131637814/bawiz.pdfIn PDF document text
  • http://xoxokifo.canadianbarleytea.com/uploads/1/3/0/7/130775429/be390c071e4edb3.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/1/0480/0829/8655/files/socrative_student_cheating.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/78f0fbc8-efa6-4f2a-908b-b71adf0727ae/74413139221.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b40e3ba4-5298-4b94-a73f-bcdaa010482d/21717738373.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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