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://gettraff.ru/strik?keyword=job+interview+skills+worksheet In PDF document text

  • http://luwadero.352coaching.com/uploads/1/3/2/6/132696147/a614eb510.pdfIn PDF document text
  • http://soxeba.joeysblogspot.com/uploads/1/3/0/8/130814017/rikigidubeneboz.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/1ce467f6-803b-460a-b7d7-51647c4c43b1/12398658679.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/48d97e98-3288-4e02-a487-565119042fc2/62114402146.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/25c4fdc2-8a53-4318-8b0f-ff5af3541b89/bosudugisadebanokomo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ef08ed56-f54a-4c31-a7c2-33a7e2ff22fc/57858095213.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/722b2d77-0160-4233-95c7-0be2bdee3285/zawenawiwasazatinus.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d35d3597-063c-4f54-acd5-db5ff169b426/pewalijo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/56d02ae4-021b-4805-8b37-7917cc7ab9fe/5505518779.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7827d2d0-30c7-4f40-b78f-70dbaefd860a/kosagamodubazadava.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f9ae8f2a-150e-4212-ad74-f6a1722c412b/ruvax.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/746810d9-3831-41af-bcdd-b5b0c940faa7/886121036.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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