Malicious PDF — malware analysis report

Heuristics 7

• 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 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://31kouqiang.com/userfiles/file/1625563127.pdf In PDF document text

  • http://travelci.ru/ckfinder/userfiles/files/54298874315.pdfIn PDF document text
  • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c062d259979---kunonawelanado.pdfIn PDF document text
  • http://fsgzb.com/upfolder/e/files/20210818054332.pdfIn PDF document text
  • http://alhouti.com/userfiles/file/77012608692.pdfIn PDF document text
  • http://we2meeting.com/ckfinder/userfiles/publics/files/53390319102.pdfIn PDF document text
  • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb48848abb---47076476754.pdfIn PDF document text
  • https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/vuxugubizirafuk.pdfIn PDF document text
  • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720f3211a11---nopolikomifofizatet.pdfIn PDF document text
  • http://sam-global.ch/files/file/61066488335.pdfIn PDF document text
  • http://finance-bulldog.cz/UserFiles/File/27519044812.pdfIn PDF document text
  • http://diodelumi.com/ckfinder/userfiles/files/milon.pdfIn PDF document text
  • https://lawtutors.co.uk/js/ckfinder/userfiles/files/wolikafomajomakifejot.pdfIn PDF document text
  • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/90406749850.pdfIn PDF document text
  • http://tribo.kz/userfiles/File/parufajufa.pdfIn PDF document text
  • https://residenciasanamaro.es/userfiles/files/xaneruvisakedemawedi.pdfIn PDF document text
  • http://tovicetour.com/FileData/ckfinder/files/20210703_9078783C2449B808.pdfIn PDF document text
  • http://wearefamilypalestine.com/clients/3/3b/3bc38fc23f9ffb54b20226cbd6ad6ce3/File/38048279889.pdfIn PDF document text
  • http://allmedicus.com/userfiles/file/63308025849.pdfIn PDF document text
  • http://techbis.pl/files/file/dugimo.pdfIn PDF document text
  • https://www.esfa.bg/root/ckfinder/userfiles/files/46109842774.pdfIn PDF document text
  • https://marljivo.hr/UserFiles/files/63338034260.pdfIn PDF document text
  • http://kimsanghun.com/upload/userfiles/file/20218101113291575.pdfIn PDF document text
  • http://onishi-kyosendo.jp/archive/35599225642.pdfIn PDF document text
  • http://bsbcarpet.com/userfiles/file/vivevapibesugitufoka.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=chubb+masterpiece+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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