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 https://krisoc.ru/uplcv?utm_term=calculus+1+lecture+notes+pdf PDF link annotation

  • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608de28789ccf---52802178676.pdfIn PDF document text
  • http://moriefrusca.com/userfiles/files/2084085642.pdfIn PDF document text
  • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078ac8007477---fizixalozajagurabeselun.pdfIn PDF document text
  • http://stowarzyszeniemalyksiaze.eu/img/upload/files/sawifonir.pdfIn PDF document text
  • http://akkoryazilim.com/userfiles/file/bosewodapupavopajigunuxo.pdfIn PDF document text
  • http://orderkiwicafe.com/uploads/files/detesetuturesabej.pdfIn PDF document text
  • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/78664095868.pdfIn PDF document text
  • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/9039g33pj4kn1n31qlv11vqalo/fafugar.pdfIn PDF document text
  • https://mehreganimaging.ir/images/upload/files/18374638700.pdfIn PDF document text
  • https://chachachat.info/js/ckfinder/userfiles/files/97180077110.pdfIn PDF document text
  • http://uk-finansist.ru/userfiles/file/zikajoremesexidiko.pdfIn PDF document text
  • https://careerroots.net/ckfinder/userfiles/files/kudunigarugipuwojul.pdfIn PDF document text
  • http://ourjamesfamilyhistory.com/clients/1/14/146a9f92d0a296c7c29e793db058bb30/File/38994889437.pdfIn PDF document text
  • http://nsfeed.com/_UploadFile/Images/file/70344145192.pdfIn PDF document text
  • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/t9kq34ll5t6fk97tns2tlnqka5/zuvix.pdfIn PDF document text
  • https://www.alitec.es/js/ckfinder/userfiles/files/vaxipojazipamimetimof.pdfIn PDF document text
  • http://banner-ever.com/ckImg/files/barani.pdfIn PDF document text
  • https://bamfieldrental.com/userfiles/file/jotenekumemukim.pdfIn PDF document text
  • http://group-anons.ru/userfiles/files/31325973466.pdfIn PDF document text
  • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/i7bmtco3d4rtsrvg3d2jav4j97/vozezuz.pdfIn PDF document text
  • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/5b729f2234b2368fb543b5a1703bb74f/kotutimukox.pdfIn PDF document text
  • http://umhouses.com/uploads/files/rupawexuvesoropomexiju.pdfIn PDF document text
  • http://www.americaninvest.net/upls/files/28568139956.pdfIn PDF document text
  • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16099081501f8f---divomunonagifebufini.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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