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/123?keyword=action+words+activities+worksheets In PDF document text

  • https://cdn-cms.f-static.net/uploads/4379723/normal_5f8b3ca07d31b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4412767/normal_5f93ef9489050.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376866/normal_5f8e1d9334d45.pdfIn PDF document text
  • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/dekojafijezukagupov.pdfIn PDF document text
  • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/ae55f.pdfIn PDF document text
  • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/dosapisobi.pdfIn PDF document text
  • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/dosejaponosuzote.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378386/normal_5f8a6d6e78754.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376875/normal_5f8d444b2a57b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384642/normal_5f8eee57c4faa.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390071/normal_5f948616dcce3.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007cdf.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007cdf.bin)
  • https://uploads.strikinglycdn.com/files/b2dcf9c9-868e-483b-af65-60a2f2956d8c/nagikagix.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0d5449b5-1a86-4a53-abf4-b391350df68e/tujisu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5d608647-025b-4d3c-8492-0e44e2915939/6226311418.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/cirrosis_hepatica_fisiopatologia.pdfIn PDF document text
  • https://s3.amazonaws.com/gupuso/definition_of_curriculum_by_experts.pdfIn PDF document text
  • https://s3.amazonaws.com/bededuxotulapil/multivariate_data_analysis_joseph_f._hair.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/08ad3fe5-b4bd-4081-897d-368cac70d28a/9747584666.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f98baac6-9295-4b47-8fce-feca86e738bf/74458233869.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_off00007cdf.bin)

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