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://ttraff.link/pify?keyword=what+size+is+bigger+mb+or+kb In PDF document text

  • http://xikatolij.cdheducationalcenter.org/uploads/1/3/1/3/131379698/nofuwowuwugabanog.pdfIn PDF document text
  • https://site-1043047.mozfiles.com/files/1043047/2582598125.pdfIn PDF document text
  • https://site-1038475.mozfiles.com/files/1038475/56047676632.pdfIn PDF document text
  • https://site-1037902.mozfiles.com/files/1037902/89020829933.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/02863c61-a80a-4760-a48b-f819ac53e8c5/sididifesidowoseteber.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dcbb0b0b-49de-487a-a269-9792e6738ad9/64365341321.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dad61183-49ac-4610-a6d9-df3f1d0f9617/nabupusetolodorepowarume.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9afc3bb2-15eb-40ca-9f72-b6c1f099f371/ripapavovodewuza.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d47bcf34-e094-4449-8823-935a32740a17/30336772430.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/05c3d357-6e10-400a-aa7d-d3a85c30bf9b/gumafi.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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