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://ggtraff.ru/123?keyword=hall+effect+experiment+viva+questions+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4374203/normal_5f8cb8973a42c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367687/normal_5f874f1a359f1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365628/normal_5f88203863c6d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368972/normal_5f882033da1b4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366408/normal_5f88cea00efb2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384046/normal_5f8c88f4b4ece.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371258/normal_5f8f18d111197.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366628/normal_5f889c8f95f1e.pdfIn PDF document text
  • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/6a28b9286db0f.pdfIn PDF document text
  • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/zuwixidit.pdfIn PDF document text
  • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/a5a60cfe9ed818.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/9fd36d1c-aca9-467e-84e3-7e5e8f8c41c2/student_friendly_quantum_field_theory_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ef9cb864-8f8f-456d-8a03-bcb76b7d5535/19819669261.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/9031/9804/files/53638698869.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/5738/8440/files/swcs_infinite_campus.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0480/3366/1077/files/39136959533.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/192569be-387c-4241-a315-4ec886e2d0f2/gavobigimudefe.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/54e722e6-4cf5-4748-8d3e-bfad0e64582b/27863407272.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1f596457-05e8-48c0-9734-236950b15f92/raxoluniluponekukipe.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 PDF document text

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