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/strik?keyword=plural+form+of+compound+nouns+exercises+pdf In PDF document text

  • http://files.charitysportfolio.com/uploads/1/3/1/8/131859261/tisagavuv_pevamele.pdfIn PDF document text
  • http://files.garrettparknurseryschool.org/uploads/1/3/1/1/131164460/30f95afa2e334b8.pdfIn PDF document text
  • http://files.lonsdale-estate.co.uk/uploads/1/3/1/4/131437977/1d13eaecb2cf.pdfIn PDF document text
  • https://site-1036920.mozfiles.com/files/1036920/wexaboto.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/3eec8ec3-4f70-490b-b124-91023ec01751/18228750735.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/60e6dd47-94da-47d0-a865-4886380ca7b3/65818278164.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/02534d59-6496-4cbf-a3c2-a161a6002e44/rijapifuwamisedimod.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/1-_99_prayer_guide_osrs.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/81183854860.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/6720/9893/files/35609174560.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/2002_ap_calculus_ab_free_response_question_4.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/chapter_11_lab_modeling_meiosis_answer_key.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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