Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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/123?keyword=north+carolina+appellate+style+manual PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4389797/normal_5f98100083017.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390081/normal_5fa311aca71c0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4414701/normal_5f966f4746a5b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366965/normal_5f873c09b4108.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/b80c3632-ca4d-4852-8f3c-c5b27872f41c/27741956312.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/aaa1c798-ede8-4634-8518-81dc1676dbae/libro_el_caballero_dela_armadura_oxidada.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b0374a0b-2494-4b49-bcb4-2892472d2b21/35122142775.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/32e234b6-0465-40d2-860a-8ce948731d20/dolabinoxirorotamekenog.pdfIn PDF document text
  • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
  • https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.pdfIn PDF document text
  • https://vafinudon.files.wordpress.com/2020/11/target_acquisition_destiny_2.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8eab541f-32d5-4b6f-8609-438238558156/ff_crystal_chronicles_guide.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6d6c78a6-ee5a-4c51-b66c-edb8ef932a46/48542721167.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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