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=congruence+transformations+worksheet+answers In PDF document text

  • http://sapat.iispsc.com/uploads/1/3/2/6/132681308/1472737.pdfIn PDF document text
  • https://site-1039330.mozfiles.com/files/1039330/11464191654.pdfIn PDF document text
  • https://site-1038744.mozfiles.com/files/1038744/37320037562.pdfIn PDF document text
  • http://fontawesome.iohttp://fontawesome.io/license/In extracted file (font_00_sfnt_off00005bec.bin)
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000659e.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000659e.bin)
  • https://cdn.shopify.com/s/files/1/0479/2906/5639/files/idaho_statesman_voter_guide_2020.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/1600/7075/files/ethos_pathos_logos_worksheet.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/7950/6847/files/75030825783.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a040f911-7f90-42a6-a0cf-dbb5e2d3d9b9/98738442581.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7829a3fb-8616-406f-9c4d-932367c66072/nemudefowidojive.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a45dc966-a350-4018-97f7-66a81be922af/88863557227.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8314e0cf-c8d2-4c4a-91b4-c69e8d13f1d9/podafefumoki.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d01e62cb-8083-4f00-af1b-92de20e24641/78450134521.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_off0000659e.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off00009b5e.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off00009b5e.bin)

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