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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://irlanc.ru/uplcv?utm_term=dotnet+4.5+offline+installer PDF link annotation

  • https://clic-essc.ch/ck/ckfinder/userfiles/files/2683267194.pdfIn PDF document text
  • https://atavio.ru/files/file/47097958933.pdfIn PDF document text
  • https://www.domosystem.gr/ckfinder/userfiles/files/letodoxugidukezozogo.pdfIn PDF document text
  • http://phanvienphianam.com/uploads/userfiles/file/xafixivemagedumoziviwif.pdfIn PDF document text
  • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c9190164a---46392312255.pdfIn PDF document text
  • http://oumkua.com/userfiles/file/5430612275.pdfIn PDF document text
  • http://csp.hu/editor_up/17702583844.pdfIn PDF document text
  • https://floraplant.gr/FCKeditor/userimages/file/kukefamafetimatatekus.pdfIn PDF document text
  • https://happyfun.tw/uploads/files/202109151315489268.pdfIn PDF document text
  • http://nitexprofi.cz/userfiles/file/nidunapujagoxomanukerimur.pdfIn PDF document text
  • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/v9fkgjb3271knkp06h6v64n9mr/90709118960.pdfIn PDF document text
  • http://narnivet.com/userfiles/files/71268943999.pdfIn PDF document text
  • http://tw-jia.com/uploads/files/202109022004422712.pdfIn PDF document text
  • http://novastal.pl/userfiles/file/bijizawafe.pdfIn PDF document text
  • http://e-motyle.natura2000.pl/imgturysta/files/82388371213.pdfIn PDF document text
  • https://all-stage-meditation.tw/uploads/files/613cdcec5a957.pdfIn PDF document text
  • http://barefoot.pl/userfiles/file/53244261786.pdfIn PDF document text
  • http://broadviewlibrary.org/uploaded_bvlib/file/96315280091.pdfIn PDF document text
  • https://www.shamshabaddiocese.org/files/js/ckfinder/userfiles/files/lebevaxewegowifabebeba.pdfIn PDF document text
  • http://mutamobilya.com/images_upload/files/savukenovoxamekegituva.pdfIn PDF document text
  • http://uklearningnetwork.com/userfiles/file/68698441571.pdfIn PDF document text
  • https://europartner2.pl/uploads/75373304527.pdfIn PDF document text
  • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612f21ff62be3---fuxol.pdfIn PDF document text
  • https://aletihad-group.com/userfiles/files/sozaxevaxitevuxutuwe.pdfIn PDF document text
  • http://gidromall.ru/img/uploads/file/xokiv.pdfIn PDF document text
  • http://www.petersonassoc.com/emailimages/file/8545095141.pdfIn PDF document text
  • http://camberwelltaxi.com/survey/userfiles/files/kebesezavewulupisepi.pdfIn PDF document text
  • http://eiffelflowersquesnel.com/userfiles/file/fizuxilubenunuwe.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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