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=solution+of+wave+equation+by+separation+of+variables+pdf In PDF document text

  • https://site-1037275.mozfiles.com/files/1037275/nibukepusimojosidan.pdfIn PDF document text
  • https://site-1036848.mozfiles.com/files/1036848/43431084466.pdfIn PDF document text
  • https://site-1037827.mozfiles.com/files/1037827/85038034532.pdfIn PDF document text
  • https://site-1036874.mozfiles.com/files/1036874/wufoxaro.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000aa68.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000aa68.bin)
  • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/28673793300.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/0306/8068/files/me_divierto_y_aprendo_1_descargar_gr.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/8336/1181/files/red_oak_elementary_school_website.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/64312177037.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/08b51714-a28d-496d-9fd6-1c56e9a29786/kadatapitunaxirexa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/72682192-382c-4643-a49b-d98a8db758d8/18368377993.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2d7de943-6100-432d-b84f-a2763b9777df/fuxemotatefolukokavifi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/ncees_reference_handbook_9._4.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_off0000aa68.bin)

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