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/pify?keyword=fridays+gluten+free In PDF document text

  • https://cdn-cms.f-static.net/uploads/4388274/normal_5f9091f4af604.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381318/normal_5f8bed8683d64.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387586/normal_5f8e59ecbb2fb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369797/normal_5f891eaf9559f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376856/normal_5f9a08a809e68.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370525/normal_5f8fd55cbef1f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369657/normal_5f9881786e14b.pdfIn PDF document text
  • https://kolivobaka.weebly.com/uploads/1/3/4/5/134500933/7067360.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380072/normal_5f8accac4c9d2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4386836/normal_5f94e24ccc8a5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366348/normal_5f8b430064096.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000082f0.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000082f0.bin)
  • https://s3.amazonaws.com/dixaleko/autosar_diagnostics.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/7364/1379/files/stained_glass_window_math_problem_answer_key.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/7450/9732/files/zisifugexojo.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_off000082f0.bin)

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