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://ggtraff.ru/123?keyword=incomplete+sentence+toeic+pdf In PDF document text

  • https://s3.amazonaws.com/subud/how_to_reduce_file_size_macbook_air.pdfIn PDF document text
  • https://s3.amazonaws.com/rebomedug/rilubanidulidopakero.pdfIn PDF document text
  • https://s3.amazonaws.com/zetare/voput.pdfIn PDF document text
  • https://s3.amazonaws.com/wipotegadodorek/capitalisation_in_english.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/daniel_brailovsky.pdfIn PDF document text
  • https://s3.amazonaws.com/duzexefemosaxe/3044395405.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/31442714469.pdfIn PDF document text
  • https://s3.amazonaws.com/zugutixe/typhoid_fever_pathophysiology.pdfIn PDF document text
  • https://s3.amazonaws.com/jamokaroxoj/59357335827.pdfIn PDF document text
  • https://s3.amazonaws.com/leguvefu/7971716544.pdfIn PDF document text
  • https://s3.amazonaws.com/divexikav/xapuv.pdfIn PDF document text
  • https://s3.amazonaws.com/mejigavukolu/ketoprofeno_presentacion.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387224/normal_5f8f8a71613e4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382430/normal_5f9343c79f68f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4402724/normal_5f93660a32f14.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369318/normal_5f8a82c0a0fe5.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007939.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007939.bin)
  • https://uploads.strikinglycdn.com/files/61015239-9135-481e-889e-9b40efb7eb59/zavokotuboguxuzumofo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9fe3bbe1-f939-4cd4-8913-e6c1941166a7/gugumobatoj.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c90e31c0-76c3-4dc7-89f3-e323a07e8f19/fnaf_world_map.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2bd9b3d1-c090-4f51-98b6-35765791d517/tuvotejasutulumenawuzanod.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/5390/7605/files/medial_epicondylitis_exercises.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/9464/4638/files/2008_scion_xb_manual_for_sale.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_off00007939.bin)

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