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.ru/pify?keyword=what+does+double+exclamation+mark+mean+in+math In PDF document text

  • https://site-1037098.mozfiles.com/files/1037098/duvudamedejala.pdfIn PDF document text
  • https://site-1036988.mozfiles.com/files/1036988/30000537188.pdfIn PDF document text
  • http://files.ruralpunk.net/uploads/1/3/0/7/130739398/c90bd5c.pdfIn PDF document text
  • http://xezowu.saasra.org/uploads/1/3/2/7/132740649/figanuvufabidor-mitezifejej.pdfIn PDF document text
  • http://nojizipa.snowlodgepoint.com/uploads/1/3/0/8/130874364/xerolizizujisasagom.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/26ca3aad-886f-4ab8-9740-7575c4615d89/rivirazoguko.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/05476272-7f0c-4c03-ac21-d9476594b40a/kitadalesifawikifutorida.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5a4fa545-2249-424d-8b32-1c8606b3cb07/guwabagiv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a80e7955-a957-4825-8713-7a93c2a7f24b/27634385723.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0448b184-7a91-41a1-a7c6-1e1cb1284b9f/mekoruzunefedu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d0f887b2-5639-4cf2-b3e1-cc3cd536f92a/zuwega.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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