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.
• 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 https://chcial.ru/uplcv?utm_term=perfect+ed+sheeran+piano+sheet+pdf PDF link annotation

  • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e0096ca56fa---lafixipid.pdfIn PDF document text
  • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612e18474ffc3---4059482833.pdfIn PDF document text
  • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/fa93f3adc15e0fba14c9e80fc2efc596/70373601588.pdfIn PDF document text
  • http://hooleihomes.com/cms_images/file/zifutajunujilelenib.pdfIn PDF document text
  • http://sys-svinding.dk/userfiles/file/vakijomenimeb.pdfIn PDF document text
  • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/u681p6u10ckodv2i1d33amo9m4/kexosogix.pdfIn PDF document text
  • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/16093afe2bf436---sumexojo.pdfIn PDF document text
  • https://easy2ticket.com/upload/files/96736009829.pdfIn PDF document text
  • http://alexanderkanevskyartistbiography.com/clientMedia/file/88041658320.pdfIn PDF document text
  • http://avandcie-energy.fr/ckfinder/userfiles/files/1271432065.pdfIn PDF document text
  • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eafdfc3c84---saguzefenerikeb.pdfIn PDF document text
  • http://tuzvedo.hu/elemek/file/redegapojixukiwaresaben.pdfIn PDF document text
  • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/xinazitarux.pdfIn PDF document text
  • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b02690419---11566894937.pdfIn PDF document text
  • http://kleinschadenexpert.de/userfiles/file/13159261239.pdfIn PDF document text
  • http://asbufestival.com/uploads/FCK_files/file/kevasajixu.pdfIn PDF document text
  • http://7seapharmtech.com/Uploadfiles/files/74304314023.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/27477449905.pdfIn PDF document text
  • http://kunas.lt/app/webroot/uploads/files/97126402211.pdfIn PDF document text
  • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160946f5a76134---74812683559.pdfIn PDF document text
  • http://zoldjogsi.hu/uploads/files/16688347398.pdfIn PDF document text
  • http://mtjjt.com/2013/upload/article/files/210701022243008223zkkp0.pdfIn PDF document text
  • http://dnepropress.net/files/file/webokokajovupikomifoki.pdfIn PDF document text
  • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/99ffe0bc3f64dc9e2ef10c57fd54a4a7/79267590845.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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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