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://cctraff.ru/wb?keyword=choice%20question%20answer%20sheet In PDF document text

  • https://s3.amazonaws.com/xuxifuzituwu/watexegidoboxawobojem.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379385/normal_5f966fd72e4f2.pdfIn PDF document text
  • https://s3.amazonaws.com/legenapi/demetra_george_mysteries_of_the_dark_moon.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365638/normal_5f86fa87b1e59.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369631/normal_5f9bd918a73fa.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8fc81107093.pdfIn PDF document text
  • https://s3.amazonaws.com/retisovojor/98935531505.pdfIn PDF document text
  • https://s3.amazonaws.com/bifamomove/5.05_mixtures_and_solutions_lab_report.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008e3c.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008e3c.bin)
  • https://cdn.shopify.com/s/files/1/0504/9453/7919/files/65384086191.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/8209/6033/files/lose_40_pounds_in_2_months_reddit.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/0030/6111/files/23459607003.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0478/0733/2511/files/42471444474.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_off00008e3c.bin)

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