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=amoeba+sisters+photosynthesis+and+ce In PDF document text

  • http://files.calvinchurchri.org/uploads/1/3/0/7/130776712/topipikekisawe.pdfIn PDF document text
  • http://zifabo.mobilemusicphilly.com/uploads/1/3/0/8/130874123/4337722.pdfIn PDF document text
  • http://files.dominiquemarguerite.net/uploads/1/3/1/0/131070314/ff096ef8221.pdfIn PDF document text
  • https://site-1037261.mozfiles.com/files/1037261/84872340188.pdfIn PDF document text
  • https://site-1039722.mozfiles.com/files/1039722/66422648358.pdfIn PDF document text
  • http://sabetudu.mizunagardens.com/uploads/1/3/0/8/130814070/6651835.pdfIn PDF document text
  • http://files.hacker-pros.com/uploads/1/3/1/3/131382030/2547092.pdfIn PDF document text
  • http://reraza.fatapejungle.com/uploads/1/3/2/6/132681422/joberaw.pdfIn PDF document text
  • http://files.lavwcd.com/uploads/1/3/1/3/131383434/cedc317cd679.pdfIn PDF document text
  • http://mavomama.akeroutdoorproducts.com/uploads/1/3/2/8/132814930/tonakijobozu.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/09a6283b-ac00-4503-90b2-c03862e5a988/68851503086.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e9e7defd-9023-4402-bbc7-7d9b9cbabeea/luvozotu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/335cc223-2d90-4ec2-8f8b-6241a985e838/53215338132.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/362b1ea4-50ef-46c5-983d-4c00d50585eb/18169223766.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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