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/wb?keyword=concepto%20de%20paleontolog%C3%ADa%20en%20pdf In PDF document text

  • https://s3.amazonaws.com/badodemebo/togit.pdfIn PDF document text
  • https://s3.amazonaws.com/bulozor/8469323449.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/longman_dictionary_vk.pdfIn PDF document text
  • https://s3.amazonaws.com/xoxaneral/act_english_practice_tests.pdfIn PDF document text
  • https://s3.amazonaws.com/vinivuxo/automata_theory_cohen.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/27400487275.pdfIn PDF document text
  • https://s3.amazonaws.com/senodiw/synthesis_of_antipyrine.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405660/normal_5f94d778134f9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372681/normal_5f8f522a8967d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8710c61850b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366043/normal_5f873a9bc6a7e.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000072b0.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000072b0.bin)
  • https://cdn.shopify.com/s/files/1/0500/0524/6112/files/71427433245.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/31332363271.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/9546/7195/files/fedigokedakupewoxu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b63b3083-1d44-4562-bf2d-b988c2d14e8a/lubamuzezopexusavejewagi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/74ffe0b2-daba-4b0c-8da1-3ac39e1e1d77/pofuzurutokimisaboxal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/88dddc53-bf7e-4633-a999-1cf2ec11e352/descargar_monster_inc.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/05daf8fa-4e2a-4637-98d3-7e22fbb40e1d/47283558647.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3c842dcd-b48a-4349-8ffd-6747ef97933d/23999863159.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e2f7513d-ad10-4504-8d49-2fb50f43436c/vomibagozedosikegefit.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/415a8ef3-0236-4b08-bfb3-f0a7e32bb60e/vaxulebokam.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/17122a32-7602-4dd6-af54-1ebe492ef772/59507992914.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://dejavu.sourceforge.netIn extracted file (stream_006_off0000a8ab.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_006_off0000a8ab.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off000072b0.bin)

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