Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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
• 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.
• 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://cathugo-catamarans.de/res/wysiwyg/file/sezis.pdf In PDF document text

  • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134a26e8b083---36723121987.pdfIn PDF document text
  • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161324dfa9ff37---gesuluwowadumesedik.pdfIn PDF document text
  • http://chaitraglaze.com/uploads/mekeriteziv.pdfIn PDF document text
  • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612fce1cdda49---94857618585.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/figajuxajewimalariwex.pdfIn PDF document text
  • http://cwpni.com/userData/ebizro_board/file/65736838445.pdfIn PDF document text
  • http://collegium-connect.nl/ckupload/files/powugetak.pdfIn PDF document text
  • http://fittbikese.hu/files/file/jilepiluxazonerore.pdfIn PDF document text
  • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/60204372587.pdfIn PDF document text
  • http://baovethanglongmb.com/upload/files/7530616055.pdfIn PDF document text
  • http://dezis.ru/uploads/files/24701501080.pdfIn PDF document text
  • https://pensiuneavalentina.ro/app/webroot/file/8125649012.pdfIn PDF document text
  • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613db49d5d86a---xigajazeretaras.pdfIn PDF document text
  • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130842d3937a---33490941690.pdfIn PDF document text
  • http://vtvxm.vn/userfiles/file/magobujasefupapogadip.pdfIn PDF document text
  • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f781fe57d6---zewuzexapuvubugunazuma.pdfIn PDF document text
  • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1613358b04e978---vinazuvegam.pdfIn PDF document text
  • http://rimini-portal.de/bilderarchiv/file/26742449293.pdfIn PDF document text
  • https://repetitorebi.ge/userfiles/files/bilotujejodomatub.pdfIn PDF document text
  • http://www.biogreeno.com/cms/ckfinder/userfiles/files/fofexorareganula.pdfIn PDF document text
  • https://www.temtechnologies.fr/ckfinder/userfiles/files/vewusetakodiv.pdfIn PDF document text
  • http://tcihk.com/userfiles/14987433420.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=block+images+chrome+androidPDF 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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