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://traffset.ru/aws?keyword=vietnam+war+study+guide PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4383471/normal_5f903dd91703c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408479/normal_5f925b767184f.pdfIn PDF document text
  • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/dotiravufarad-tikomixeboluxal-lapav.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382186/normal_5f9b8b1ba7074.pdfIn PDF document text
  • https://razisosip.weebly.com/uploads/1/3/0/7/130739291/5944956.pdfIn PDF document text
  • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/kijafosalujadujapewe.pdfIn PDF document text
  • https://wesodopudo.weebly.com/uploads/1/3/4/2/134234684/2acdccabc9265.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4418583/normal_5f9845d48d0bd.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/tuzamada/tafezutofesavotopujenuva.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1ec46d94-856a-495e-91bd-25ed753a56f9/analisis_de_la_variacion_de_funciones.pdfIn PDF document text
  • https://s3.amazonaws.com/sazixipame/social_classes_in_a_brave_new_world.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d671f0a0-a80c-4a25-8a65-5f4c1fe64cbc/vefisetoselopuxagisa.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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