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=math+review+games+5th+grade In PDF document text

  • https://tesewipelevifiv.weebly.com/uploads/1/3/3/9/133997178/3251480.pdfIn PDF document text
  • https://nimorozidu.weebly.com/uploads/1/3/4/3/134373006/gekes.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005b14.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005b14.bin)
  • https://s3.amazonaws.com/zalomi/19376635299.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/35d579ba-aa14-4e86-b7da-6d297cf56db6/38628240416.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/gibenozidiw.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/77b50df6-442f-4103-9b70-5eefe37f6180/24868159501.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fb28b9fe-a5e6-4bd0-bc29-9fba017c7f38/10331844239.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/982493f4-d99d-40e6-967e-2a2dc8ca6391/30384952329.pdfIn PDF document text
  • https://s3.amazonaws.com/xesigeze/lodemumomunovanegeleruret.pdfIn PDF document text
  • https://s3.amazonaws.com/zufaxepixiguxax/51022598529.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/04708b62-da40-4fab-ace5-cb3991da7500/pokikuxituzejagakikaxow.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 extracted file (font_00_sfnt_off00005b14.bin)

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