Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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/aws?keyword=black+hole+charles+burns+pdf+download In PDF document text

  • https://cdn-cms.f-static.net/uploads/4375907/normal_5f8d5f1323b3d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4407793/normal_5f92d23a0455a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379837/normal_5f8bd83281765.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e33.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e33.bin)
  • https://uploads.strikinglycdn.com/files/2fdcfa3a-3705-4b59-a625-35b5d8c90cdc/fafupidutanesiropub.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d8e8415-7fa2-4027-95d4-2bf6f3be228e/47058600954.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/43e4fd1b-7e02-468e-8856-38c667c3ea1f/missing_in_sydney.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ce3915cc-9318-4b62-9b70-397b439716ce/66057487422.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b2c181ee-4ec3-4299-92a5-d05e11fb5e00/meb_for_mortals.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/vocabulary_worksheet_6th_grade.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0488/0623/2229/files/nuviligaz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/39799165955.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/7143/8495/files/96562314984.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fe3d3e39-2f3d-4c40-a047-79c8ed6846fc/diropifodutukodes.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b5cb5a31-bba3-4830-bb40-799e438e7dc4/zodijopoturali.pdfIn PDF document text
  • https://s3.amazonaws.com/jofunozuzof/aquaculture_engineering_download.pdfIn PDF document text
  • https://s3.amazonaws.com/zinudipir/4321691096.pdfIn PDF document text
  • https://s3.amazonaws.com/warapagefasovi/44622039673.pdfIn PDF document text
  • https://s3.amazonaws.com/penale/19849020385.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_off00006e33.bin)

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