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=c%25C3%25A1ch+t%25E1%25BA%25A3i+game+tr%25C3%25AAn+apkpure In PDF document text

  • https://site-1037114.mozfiles.com/files/1037114/keduzejaporake.pdfIn PDF document text
  • http://noxoledi.david-saunders.net/uploads/1/3/1/4/131437208/luwenu_bizoper_jilinik.pdfIn PDF document text
  • http://files.dancypantzboutique.com/uploads/1/3/2/6/132695741/kekoluraxukidi_janoxevugaw_zugivedumof.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007a84.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007a84.bin)
  • http://www.daltonmaag.com/In extracted file (font_05_sfnt_off0000dcbb.bin)
  • https://cdn.shopify.com/s/files/1/0476/9021/9686/files/hp_envy_17t_battery.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/cedar_park_cemetery_chicago_il.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/4287/3245/files/understanding__using_english_grammar.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d6490e02-88bf-4e93-97f4-7c113c995d90/25450670756.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/72b997fd-f01c-4ec5-80df-61aa33608cdb/31529142341.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dca6613d-8a6c-4aaf-be1f-70cf622c5f84/kaxusexakofakefopuwub.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9d41a55b-47ed-4bde-991e-44d692c5c387/gawetinesoramuvab.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_01_sfnt_off00007a84.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_04_sfnt_off0000c851.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_04_sfnt_off0000c851.bin)

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