Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://queure.ru/uplcv?utm_term=num%C3%A9ro+de+t%C3%A9l%C3%A9phone+inconnu+android PDF link annotation

  • http://www.ags-sib.ru/ckfinder/userfiles/files/podakigimat.pdfIn PDF document text
  • http://studiotecnicomaglio.it/userfiles/files/1513533037.pdfIn PDF document text
  • https://beta.nhatthiengroup.com/files/uploaded/files/xisovakudojefojupina.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/b1jfjgaj92235mobuu8ietjeh3/bedonewufawewiko.pdfIn PDF document text
  • http://makinsushi.com/uploads/files/28962206062.pdfIn PDF document text
  • http://avvocatoandreabruschi.it/userfiles/files/wiwupodezore.pdfIn PDF document text
  • https://stalbeckers.nl/userfiles/image/file/raris.pdfIn PDF document text
  • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/d184d32a5c5832a6d19b7a60b60d1948/17826015153.pdfIn PDF document text
  • http://sendedianqi.com/upload_fck/file/2021-9-17/20210917114758114997.pdfIn PDF document text
  • http://cathyourhair.nl/js/ckfinder/userfiles/files/mapepitafediwolugaw.pdfIn PDF document text
  • http://heninrealty.com/userfiles/files/lozuvaramuroworete.pdfIn PDF document text
  • http://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/segovexeroruxamivebob.pdfIn PDF document text
  • https://thepainter.asia/upload/files/bojobinuzojimog.pdfIn PDF document text
  • http://huynhgiabaohotel.com/uploads/FCK/file/11682656451.pdfIn PDF document text
  • http://tele-klass.ru/i/upload/files/84964519983.pdfIn PDF document text
  • http://mtegl.wsystem.sk/userfiles/files/laduzemogonirananawiwiduk.pdfIn PDF document text
  • https://signatureshreyas.in/userfiles/file/67539163798.pdfIn PDF document text
  • http://cariboohose.com/userfiles/file/zabotofumugulavawotub.pdfIn PDF document text
  • https://stotex.rs/files/jijukunuzudozozedoxesap.pdfIn PDF document text
  • https://www.abandassociates.com/ckfinder/userfiles/files/32318159418.pdfIn PDF document text
  • http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/luboniwiweriwuxik.pdfIn PDF document text
  • http://agrostroi-proekt.ru/ckfinder/userfiles/files/wumugibudugiv.pdfIn PDF document text
  • http://laxycoffee.com/upload/files/66292040501.pdfIn PDF document text
  • https://protum.se/file/22730457361.pdfIn PDF document text
  • http://artechq8.com/beta/uploads/files/kutesikawexexoduxiv.pdfIn PDF document text
  • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161396b205315b---91030701665.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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