Malicious PDF — malware analysis report

Heuristics 4

• 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.
• 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=chapter+1+introduction+to+statistics+1.2+exercises+answers In PDF document text

  • http://files.calisteve.com/uploads/1/3/1/6/131606186/jisejobov_sabowiwom_luweki_vobiti.pdfIn PDF document text
  • http://gulas.storeofhopeministries.com/uploads/1/3/2/8/132816117/loxivusuxixoke_mewumixabuv_wunuz_fekova.pdfIn PDF document text
  • http://files.iscebs-chicago.org/uploads/1/3/1/0/131070633/zuvororudoz_tawopatunijor_povufugax_senedunovinote.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/8788/3165/files/74326069105.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/2028/7639/files/the_grapes_of_math_alex_bellos.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/7934/6592/files/87141921714.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/363476da-073a-4892-b218-e70b4231f8df/39649856792.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/075c2b22-5475-4c4c-8830-3f18e3c3c909/mozodofepixawabezit.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/63022c50-2278-429d-b426-0aa57856a0b9/95085435149.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/381dc89d-d4ae-4256-8acb-f95bd1f8b171/jesiparajofumekebizuzane.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/098ea363-5a9b-4d1b-8844-f0d1e0d578be/puruduvusamev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/60f4bb58-71b3-4e0d-aa7d-6b64294ab6b7/mitebag.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 PDF document text

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