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.
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=ielts+practice+test+6+listening+answers In PDF document text

  • http://kojexem.chasingbears.com.au/uploads/1/3/2/7/132740480/sidezixok.pdfIn PDF document text
  • http://fupopage.billiardsaustralia.com/uploads/1/3/2/7/132710621/1ee42fd7d9c6.pdfIn PDF document text
  • http://files.unforgettableventsatl.com/uploads/1/3/1/4/131408170/wibofuwugo-ralerog-tosolesipefiri-vinevilobi.pdfIn PDF document text
  • https://site-1038612.mozfiles.com/files/1038612/24562381089.pdfIn PDF document text
  • https://site-1043337.mozfiles.com/files/1043337/54163891238.pdfIn PDF document text
  • https://engexam.info/wp-content/uploads/2018/01/IELTS-Listening-PrIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005965.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005965.bin)
  • https://uploads.strikinglycdn.com/files/2626bfe7-5ff0-4fdd-8803-0d711afbf432/90415362303.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/50543d69-3f47-4acd-b7b2-ec5ec3ef88d1/19747216727.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/255dbd2d-cb80-499e-8da3-9682dcedd509/9776446415.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f84a1e1d-0fae-4f07-b86d-debaf8f8ef33/58239456473.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/17ee0eb3-d7a1-4d2d-b3c6-4dcdbcafe060/43787474285.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b4bcf873-9ba0-49e1-a167-9b9212da52d8/vukifawakelon.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_off00005965.bin)

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