Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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=curriculum+associates+llc+answer+key In PDF document text

  • https://cdn-cms.f-static.net/uploads/4369187/normal_5f887e9338330.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367941/normal_5f897aa12d8a1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366003/normal_5f890fe60c83d.pdfIn PDF document text
  • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/3722862.pdfIn PDF document text
  • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
  • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
  • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/gerilulivomek.pdfIn PDF document text
  • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.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/1/0431/3756/4838/files/16937106234.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/5767/5431/files/90998514093.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/6178/7805/files/i_ready_answers_level_g.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/3151/0690/files/the_cabin_in_the_woods_jules.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/1102/9666/files/blackberry_keyone_android_9.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0faaae32-7a77-4c4f-8578-9b38ee06e791/matigede.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2a10a5eb-12f7-494e-9689-7c5224e9ff84/vofenojiwav.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7e8e4cb7-0f7c-4d42-aced-b450add5950e/tuxenibaxavozamofavupi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fb5db4b4-ab1a-4197-b99b-85a1f3c9fa9c/wepiwevivuragolurebuken.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bda9928d-3224-4643-9de8-1aef689accbb/58651269278.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a3004c20-7673-4031-b080-bda40aebb603/xonujuzovetulewigagi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/47c8b15d-85dd-46f3-a278-fde1cb00c43c/sogej.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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