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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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=ejercicios+de+sinonimia+antonimia+polisemia+homonimia+pdf In PDF document text

  • http://files.marlincoveoc.com/uploads/1/3/0/8/130874655/4615789.pdfIn PDF document text
  • http://tojib.sewitupdesigns.com/uploads/1/3/2/6/132681670/9680691.pdfIn PDF document text
  • http://files.pacificislandaqua.com/uploads/1/3/2/3/132302846/nawejuzofuxa_rokeduvetagepo_tuwedaxutagov.pdfIn PDF document text
  • http://files.impactliberiamissions.org/uploads/1/3/0/8/130873758/781203.pdfIn PDF document text
  • http://files.vandegriftgolf.com/uploads/1/3/0/7/130775518/6186430.pdfIn PDF document text
  • http://judukud.peterblackphotos.com/uploads/1/3/1/4/131406453/1d67922a39345cc.pdfIn PDF document text
  • http://xesek.revitalizefitnessnutrition.com/uploads/1/3/2/6/132681352/4829082.pdfIn PDF document text
  • http://vezab.stjohnlutherans.org/uploads/1/3/1/4/131413418/pitibu_bamof.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/bixumil.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/stars_classroom_doe_login.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/9098/0253/files/colligative_property_definition_organic_chemistry.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/0696/2075/files/zimor.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/39efe9a6-3169-45da-97bb-bd03444f5c6f/metezego.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/44721593-869b-4909-be52-3d38a068596f/53711963763.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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