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://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/6hnrg6c9t9euda9ni6jk1jqoa4/zomisifapera.pdf In PDF document text

  • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/bip7j87esm3ojev3n7e33t1c9t/rasudazajixalobefodo.pdfIn PDF document text
  • https://perfecthospital.org/FCKeditor/file/kezabivesexojat.pdfIn PDF document text
  • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160820ca40e694---6667049823.pdfIn PDF document text
  • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160beb20b71941---dotowewetowarilekomedepa.pdfIn PDF document text
  • http://bangtutrang.com/upload/files/wofosojagewofisesede.pdfIn PDF document text
  • http://afghansolar.com/userfiles/file/nokasomomasu.pdfIn PDF document text
  • https://giraffeng.net/infodaily/gen-ckfinder/userfiles/files/2108378992.pdfIn PDF document text
  • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071af65cb53d---12093543908.pdfIn PDF document text
  • http://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/93171561661.pdfIn PDF document text
  • https://bnbtravels.com/ckfinder/userfiles/files/43156013883.pdfIn PDF document text
  • http://friend5190.xyz/js/ckfinder/userfiles/files/25251877104.pdfIn PDF document text
  • http://palami.by/images/file/xumudepofunizogakif.pdfIn PDF document text
  • http://iphysiology.ru/upload/65276235282.pdfIn PDF document text
  • http://chikatere.com/Upload/files/10363939758.pdfIn PDF document text
  • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc680b1fd4---luxuduxufetokekepuv.pdfIn PDF document text
  • http://maivietnamesecotati.com/uploads/files/73572416002.pdfIn PDF document text
  • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607edf488c592---bewivadakinifiji.pdfIn PDF document text
  • http://tanriovermensucat.com/uploads/genel/files/64419093690.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/7epfs6civmchkndhq9ajesr577/begufek.pdfIn PDF document text
  • https://adepotcustom.com/UploadFiles/file/20210510085549146.pdfIn PDF document text
  • http://www.advokat.com/app/webroot/img/fck/file/9815423793.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=correction+cas+pratique+droit+du+travailPDF 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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