Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://ttraff.link/123?keyword=chem+worksheet+19-2+answers In PDF document text

  • https://cdn-cms.f-static.net/uploads/4446647/normal_5fa2d1a563969.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370303/normal_5f9906ebdcf99.pdfIn PDF document text
  • https://zavegaligap.weebly.com/uploads/1/3/4/4/134499553/vegazolo_merapepidojuvu_gizezotudime.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367303/normal_5f91667a159f2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408324/normal_5f990afb09b7b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4459654/normal_5fa238c05639d.pdfIn PDF document text
  • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/a8bf4.pdfIn PDF document text
  • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/wafimujilo.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/caa5c920-5196-41d2-90f7-8f9938a6b9a3/bapisewilurolawimavatedek.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5e21ccd7-6b3d-40a5-97f5-09e4e154e417/tibapiwajopijusepepi.pdfIn PDF document text
  • https://s3.amazonaws.com/fotojipifuzitul/colt_state_park_map.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d2871614-faae-41a4-85a0-9707ea5dff48/79769213705.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4e4c6a1c-f999-478e-b5b5-8c84675d9200/42458881086.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3516b4d0-80d7-411a-8bf6-27d02cf82d47/ldoe_bunker_alfa_code_today_january_19_2020.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/272b8901-334c-4a79-8250-e66e837bf6de/92968828297.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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