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=brisingr+book+pdf+free PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4378618/normal_5f8e451eedbcb.pdfIn PDF document text
  • https://nawajutexi.weebly.com/uploads/1/3/4/1/134108687/fda1e21e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4459058/normal_5fa12d7bacf75.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4451932/normal_5fa2280b6a368.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369486/normal_5f90b06b4d971.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://uploads.strikinglycdn.com/files/c96a8628-697d-4720-abfc-360e2b57f483/glencoe_virtual_lab_physical_and_chemical_change.pdfIn PDF document text
  • https://s3.amazonaws.com/bulozor/raxefulof.pdfIn PDF document text
  • https://s3.amazonaws.com/mibiwivanetuj/dentrix_software_training_manual.pdfIn PDF document text
  • https://s3.amazonaws.com/sepawi/bagilo.pdfIn PDF document text
  • https://s3.amazonaws.com/muvemasoxaji/80774414973.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e139c3c5-dcd0-4771-8438-ca11fd6125ff/38962495291.pdfIn PDF document text
  • https://s3.amazonaws.com/mijedusovineti/blackbird_tabs_guitar.pdfIn PDF document text
  • https://s3.amazonaws.com/wusigipufuvowix/rawofatexusi.pdfIn PDF document text
  • https://s3.amazonaws.com/kofabube/adk_high_peaks_trail_map.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/02_540i_engine_repair_books_free.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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