Malicious PDF — malware analysis report

Heuristics 6

• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• External URI info PDF_URI
  PDF contains an external URL action
• 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 http://mundori.com/js/ckfinder/userfiles/files/62756017145.pdf In PDF document text

  • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/ps3l2rd58aip5mj66s8ir6t556/6951909404.pdfIn PDF document text
  • http://www.cerathai.com/image/upload/File/93100273069.pdfIn PDF document text
  • http://ebus.cn/up_file/file/niporipezadawanuriruw.pdfIn PDF document text
  • https://darshanam.com/ckfinder/userfiles/files/xobeguvukejolofopexiziga.pdfIn PDF document text
  • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608189f49ab9e---57547718367.pdfIn PDF document text
  • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/3tbfc4jq3draqqr1o7rke9rqja/dufijezido.pdfIn PDF document text
  • http://osteriadelcampanile.com/userfiles/files/vosawaxateruzirofave.pdfIn PDF document text
  • http://shlawllc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/68191117764.pdfIn PDF document text
  • http://yushendesign.com/images_fck/file/1630142181.pdfIn PDF document text
  • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb2ca26460---dizaxavan.pdfIn PDF document text
  • https://codecs.ro/images/file/39723695121.pdfIn PDF document text
  • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b3285612f---xutugunavip.pdfIn PDF document text
  • https://icbacademy.com/upload/files/6301608530.pdfIn PDF document text
  • http://kutscher-customs.de/gfx/userfiles/files/fafejune.pdfIn PDF document text
  • https://midasspa.com/ckfinder/userfiles/files/bamexodig.pdfIn PDF document text
  • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7681aef6b---dewoxujototesumofitow.pdfIn PDF document text
  • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a5db5aadb81---52799074541.pdfIn PDF document text
  • https://v-rshine.com/upload/images/files/50451855041.pdfIn PDF document text
  • http://195exim.com/datas/files/nevolag.pdfIn PDF document text
  • http://ukrainski-rosyjski.pl/userfiles/file/90503006541.pdfIn PDF document text
  • https://imagebeaute.fr/userfiles/file/panuwozamemekarorikiz.pdfIn PDF document text
  • http://xn----8sbxab3abskk3a2j.xn--p1ai/media/file/64447482907.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=python+numpy+cheat+sheet+pdfPDF link annotation
  • 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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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