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/aws?keyword=bitbucket+start+guide In PDF document text

  • https://cdn-cms.f-static.net/uploads/4415537/normal_5f987ec66806c.pdfIn PDF document text
  • https://jikesekija.weebly.com/uploads/1/3/4/3/134367489/20cfeac1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417525/normal_5f9931f7d8ba4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367911/normal_5f9274777d59f.pdfIn PDF document text
  • https://solujokorox.weebly.com/uploads/1/3/4/1/134108712/vimuri-xedadipavidafa.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e6f.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e6f.bin)
  • https://uploads.strikinglycdn.com/files/1d0921a6-60ff-4a2e-b982-4134b2d25176/45310493246.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6b4da458-88c6-449d-8bea-a8f781736327/jiwonazevugekikavitet.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f0c7575e-670b-459f-8394-3b8dd7b72b2d/35754967826.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/57edc3ef-8b58-472e-ad1c-00933d5972b4/munivilamuxenijekawulaled.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7a389527-137f-413e-ab76-7616f8f29dde/active_and_passive_voice_worksheets_for_high_school.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cbef64bd-b5bb-42ea-a9a0-dc0d4a900469/83526209972.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_off00005e6f.bin)

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