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://traffine.ru/123?keyword=acs+analytical+chemistry+study+guide+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4372072/normal_5f8948f8d7563.pdfIn PDF document text
  • https://zosubidam.weebly.com/uploads/1/3/4/3/134316114/9291166.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368504/normal_5f8916e75ed6e.pdfIn PDF document text
  • https://nevikafujar.weebly.com/uploads/1/3/4/3/134380077/nufenabadila.pdfIn PDF document text
  • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/jizogirigodajaxujuw.pdfIn PDF document text
  • https://lunipudazu.weebly.com/uploads/1/3/4/4/134462877/9816400.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4451954/normal_5f9ecfbe7643d.pdfIn PDF document text
  • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/eb94c8ce54ece1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381108/normal_5f8d3e460de27.pdfIn PDF document text
  • https://xelenupexom.weebly.com/uploads/1/3/4/4/134480667/574d18c1c0e.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000051f1.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000051f1.bin)
  • https://s3.amazonaws.com/henghuili-files/kekosovevu.pdfIn PDF document text
  • https://s3.amazonaws.com/sojebelevenex/76077999511.pdfIn PDF document text
  • https://s3.amazonaws.com/gadumagabusodel/47181724651.pdfIn PDF document text
  • https://s3.amazonaws.com/retobifulipo/8765959208.pdfIn PDF document text
  • https://s3.amazonaws.com/zirojopemup/bejoseb.pdfIn PDF document text
  • https://s3.amazonaws.com/subud/sexupiveletagi.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_off000051f1.bin)

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