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.
• 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.
• 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/strik?keyword=autodesk+revit+2020+content In PDF document text

  • http://pamawudeb.southeastee.com/uploads/1/3/1/4/131483281/zirotixuku.pdfIn PDF document text
  • http://popesa.lowellconcrete.com/uploads/1/3/2/7/132741508/7711492.pdfIn PDF document text
  • http://kubej.steinlecounselingservices.com/uploads/1/3/1/4/131407227/8543882.pdfIn PDF document text
  • http://files.panapsacc.org/uploads/1/3/2/7/132741475/3335352.pdfIn PDF document text
  • http://files.zbmtwest.com/uploads/1/3/0/8/130874631/3432828.pdfIn PDF document text
  • https://site-1039346.mozfiles.com/files/1039346/24227521082.pdfIn PDF document text
  • https://site-1039275.mozfiles.com/files/1039275/40392436968.pdfIn PDF document text
  • https://site-1041068.mozfiles.com/files/1041068/kigiluvijuvebo.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/1/0499/8637/1752/files/69610012786.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/5136/3735/files/dosujalofin.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/lovudomisizut.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/85b21fe3-22d1-4aab-84a3-0c502e1fbd4a/29780578214.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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