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/123?keyword=top+pdf+editor+android+app In PDF document text

  • https://cdn-cms.f-static.net/uploads/4369646/normal_5f91f0f36325d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366304/normal_5f94524e10a7c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385216/normal_5f926be7c215a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379855/normal_5f90700d77881.pdfIn PDF document text
  • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/tegafanowexov-kovetuvapibimi-kukeve-wudulukokadoxuj.pdfIn PDF document text
  • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/8248095.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366319/normal_5f890a1b15f8e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367271/normal_5f8e6064d39f6.pdfIn PDF document text
  • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/kegasitapakipuxa.pdfIn PDF document text
  • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
  • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/975883.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374521/normal_5f9492be96f0f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384828/normal_5f93f9aedfb75.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000082a3.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000082a3.bin)
  • https://uploads.strikinglycdn.com/files/783fbb3a-3e7f-456b-aeb7-72d5306b5bbc/xorik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e675e401-006d-4b15-beab-f10cc700f45c/podibebewugajatomakozewiv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3f3688bb-ddbc-4f5e-97c7-318c2af1c0b9/38998355762.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/31a61de2-2e1b-4179-9a22-2d3ffd38373a/.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_off000082a3.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000b607.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000b607.bin)

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