Malicious PDF — malware analysis report

Heuristics 5

• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://trafffi.ru/aws?keyword=pex+supply+line+connector PDF link annotation

  • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/zumebufo_dosawipu_firuvute.pdfIn PDF document text
  • https://mexepefavofuj.weebly.com/uploads/1/3/4/6/134659137/9e910f3d140.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4427501/normal_5fa3386080910.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372673/normal_5f88b7ae20571.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369802/normal_5f9c5265a32fe.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/5afefb84-144e-43a4-ad0f-de3a22bf84c3/29307126525.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1763cea0-d816-42f2-8af0-267e7ba8cc01/23950834513.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9bf91c81-1f37-49a8-b938-aafdeb9c7655/textos_argumentativos_ejemplos_resue.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c86188e3-721d-49d0-82b6-a277d0c8824d/88878210407.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/47bcc58d-da04-4889-bb0e-b5e366773e4d/93870515890.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d0c5eeeb-94fb-401e-9a06-01836b7797b0/zevosajukuduvaveki.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f8146fe1-40a2-42d4-b9d8-58674c400aed/faguderosinukelez.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0b0c5867-1831-49f4-bca1-516685a0df94/the_automatic_millionaire.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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