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=alif+baa+book+3rd+edition+pdf+free PDF link annotation

  • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/4686902.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369525/normal_5f8da523ab913.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388407/normal_5f9ff5538219b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4415309/normal_5f9f9aa44544c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382620/normal_5f9fda0cec911.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381748/normal_5f9fe3354851b.pdfIn PDF document text
  • https://xuxavapivobe.weebly.com/uploads/1/3/4/5/134590147/dujix_fobelez_sogevonijek_duzaxavezoxunig.pdfIn PDF document text
  • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/34335432b7d06.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4402501/normal_5f9ba097493b1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373998/normal_5f93e8ba6e590.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420430/normal_5f9b0b951cf54.pdfIn PDF document text
  • https://rawavofim.weebly.com/uploads/1/3/1/4/131452817/5636706.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379483/normal_5f8bb5783e869.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/f843fc30-c6d2-49f9-adfa-2ca1f2c3a1ff/27797108072.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/94ea131f-1431-4a6f-b5a2-61fbaa62be17/bluestack_apkpure_for_pc.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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