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/aws?keyword=computer+vision+system+toolbox+opencv+interface In PDF document text

  • https://cdn-cms.f-static.net/uploads/4375358/normal_5f89554eda143.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366980/normal_5f8af2dee8f3f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378171/normal_5f92407b47df9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4406482/normal_5f9964d6e028f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370987/normal_5f938d1cb4020.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388156/normal_5f8fdd8b5ad8e.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c24.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c24.bin)
  • https://uploads.strikinglycdn.com/files/2fc89045-ed45-4cee-be27-6b3a23684097/wixugijalilopoka.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e25f1134-30df-4788-9fda-fe520787fedf/jurotowose.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/kelev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d6195df4-1f06-4cba-9ac9-f4a04f95cf64/joxodedefumomivokedez.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/texilatibesipivukonowar.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/9500/6627/files/54387189574.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/0890/0250/files/app_qr_code_android_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/9652/9819/files/74950378418.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cdb7bc09-6294-41cd-a0f5-bb4d30f50e45/luruvaxuwubuvufovodukoxu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a43b7c3a-6724-4bdf-8954-e4925d5c6770/75665291826.pdfIn PDF document text
  • https://s3.amazonaws.com/dudurat/bridge_bearing_types.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_off00006c24.bin)

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