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/strik?keyword=tu+vi+2020+quy+suu In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366028/normal_5f949310aaf59.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4412773/normal_5f96eccf926e6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381551/normal_5f8b5a7973a35.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366031/normal_5f91932aa798f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385869/normal_5f8fdbcf1baf7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368481/normal_5f95d1b86df72.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368240/normal_5f892628b5d5c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365586/normal_5f86fab15d079.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366645/normal_5f8947b530c66.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4427795/normal_5f98f9bf10097.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367667/normal_5f874a4713188.pdfIn PDF document text
  • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/8533731.pdfIn PDF document text
  • https://voxapinave.weebly.com/uploads/1/3/2/7/132740917/wilide.pdfIn PDF document text
  • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/bffcf020.pdfIn PDF document text
  • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/9799733cc743.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00008418.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00008418.bin)
  • https://uploads.strikinglycdn.com/files/ef96d171-c2ec-4fe4-9e3e-f1ce65bc4e78/farizodiwekotolewa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7d614872-d6ef-43e3-825e-70a5155b25de/3610979573.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/69d55e0c-7858-44cf-8de8-b0a58b02b68e/jojajonipipozomaxow.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cff108dc-339b-44b0-afda-82eb8a4f0974/22493941699.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/26120844-5c1d-4bf0-9585-5f6314dc83d9/kryron_body_armor.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6541b943-67b4-416d-b57a-3bca59fc3c29/64317998456.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/70ded0fc-c47d-4089-8bbf-2859a2897055/82728490955.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
  • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off00007424.bin)
  • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off00007424.bin)
  • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off00007424.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off00008418.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000c8a3.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000c8a3.bin)

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