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://traffmen.ru/aws?keyword=frq+ap+biology+2014 In PDF document text

  • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413110/normal_5fa0c0640226a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385204/normal_5f9b048256a08.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368976/normal_5f90aff6405f5.pdfIn PDF document text
  • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/2138368.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366401/normal_5f8bc737f339d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408863/normal_5f9b063320ceb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4414701/normal_5f96089c169b0.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/wonoti/jusixamef.pdfIn PDF document text
  • https://s3.amazonaws.com/nupotukig/67947152508.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0b9b3368-34ec-48a9-8b5c-c38f9789abe0/63751661173.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6f4b9cc7-795e-4d77-8531-0f4ead7c771a/aditya_hrudayam_by_spb_mp3_free_down.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ae29d96f-70fc-4d0d-99bb-a541ef22703f/11267674110.pdfIn PDF document text
  • https://s3.amazonaws.com/jamokaroxoj/14714701809.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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