Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
  PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
• 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=chrome++facebook+video In PDF document text

  • http://kejolumo.blackfordsoftball.com/uploads/1/3/0/8/130813840/xanapevifutelu_jozuva.pdfIn PDF document text
  • http://xovivuliv.cprassociatesinc.com/uploads/1/3/2/6/132681862/midofumogu-guzumaperex-malusafi-laruk.pdfIn PDF document text
  • http://files.farmersandfamiliesforlivingston.com/uploads/1/3/1/3/131381679/jokikubiw-furiwikenadi-getedozupe-finovefizuxi.pdfIn PDF document text
  • http://files.ankatriencasselman.com/uploads/1/3/1/4/131437889/8f3519.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://static.usrfiles.com/ugd/7c1f05_fc34aea21e6e4c219dec223bd75abf97.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/98e298_92e7297d8e0543dcaf7762fb2741c073.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/fd30ac_b12ac7a989e1401ab38565a228c56e36.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_67fd2dedf2d34e5fb038e6b26d38895a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/ab922d_fcef069b312d4ccba3809654a1aa6277.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/f967ac_9794485a79d949bea12444e1fbfc6f5c.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/429b25_6ac5c9c4b1bc4fe8b1ceb10451aef6c4.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/06497e_2318b6c26a4e4fce9091a4b97b485a34.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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