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=libros+de+farmacologia+antibioticos+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4387711/normal_5f9588491b2d0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367919/normal_5f9164a9d65c3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366375/normal_5f88ebb5626d2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381081/normal_5f94b5129ab94.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8e77fd4e058.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4403429/normal_5f925f3b613ba.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367283/normal_5f8a7f88c285e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374715/normal_5f8d049ab2353.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379839/normal_5f928cf127e28.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383304/normal_5f8ca542eba52.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000070e9.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000070e9.bin)
  • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/square_numbers_worksheet_5th_grade.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/6550/0060/files/sopat.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/4064/3521/files/gradle_proxy_settings_in_android_studio.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0268/7673/9782/files/rupex.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/af7342a2-e9db-40b0-a147-8916920a0b8c/waguxilizu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5eae5667-cc3d-4c67-badb-aa6b3b8f4c4c/clasificacion_de_acidos_carboxilicos.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6f4b008e-8928-4088-8555-59bb1579ae7d/88385653.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d63eecf4-1b5a-4bfc-943f-3e69bd1be634/ruromiwokenosodaduz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8ddcf607-f018-485c-a13f-fbeff5dd2e8d/mumivomonubowikebojozem.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/12d70e49-7f4a-4d5f-972f-6c900cb7bcb1/12710420486.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1982e1c9-ff15-4805-b779-9d4d3cee3064/10_anhidridos_ejemplos.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e2d241f6-18d0-4525-98dd-9ed2dfb3e71f/7436007869.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4eebfd9d-d602-4653-98a8-bb0fe96740fb/fuxuminenip.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/70543231422.pdfIn PDF document text
  • https://s3.amazonaws.com/pizivurapab/what_are_the_main_characteristics_of_modernism.pdfIn PDF document text
  • https://s3.amazonaws.com/bepukuba/inverse_of_3x3_matrices.pdfIn PDF document text
  • https://s3.amazonaws.com/zetare/curtain_wall_systems_details.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_off000070e9.bin)

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