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 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.
• 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://medvor.ru/uplcv?utm_term=volume+and+surface+area+formula+cheat+sheet PDF link annotation

  • https://travelworld.ro/userfiles/file/zudav.pdfIn PDF document text
  • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/bik9dtg7ofqprlvt1sls3ldf6s/lazezabatete.pdfIn PDF document text
  • https://kohphanganhotelandtour.com/userfiles/file/1557260355.pdfIn PDF document text
  • http://architettotoma.it/userfiles/files/zumetizila.pdfIn PDF document text
  • http://vodnik48.ru/content/file/nilenizonetagotesof.pdfIn PDF document text
  • http://aodaiminhhanh.com/app/webroot/uploads/files/xikifoxadux.pdfIn PDF document text
  • http://irvine.songhakbbq.com/uploads/files/43605106389.pdfIn PDF document text
  • http://laboratorioshamalab.com/userfiles/file/36698031421.pdfIn PDF document text
  • http://lammensfilip.be/uploads/files/35221102449.pdfIn PDF document text
  • https://underworldgear.com/admin/images/fckImg/file/76501184176.pdfIn PDF document text
  • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/99884257744.pdfIn PDF document text
  • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/u5olseb5masag4n2280va9raf5/55108648837.pdfIn PDF document text
  • http://ccadl.com/files/20210911154510.pdfIn PDF document text
  • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/412dio8uoosu76obas5cdub811/bigupafatoporajo.pdfIn PDF document text
  • https://alutat.com/data/file/xelofowiw.pdfIn PDF document text
  • https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/pigunukoxazuwanofofid.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/14449606910.pdfIn PDF document text
  • https://braintreeclinics.com/app/webroot/img/files/61153859841.pdfIn PDF document text
  • http://consol.hu/images/uploadedimages/file/3643496505.pdfIn PDF document text
  • http://mbjarrahi.com/UploadedFiles/New/file/52567684754.pdfIn PDF document text
  • http://h04ydivan.ru/userfiles/file/67154476027.pdfIn PDF document text
  • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/e4bad249587e248233e604c20a1ff8b5/gasanapuvogotepavam.pdfIn PDF document text
  • http://www.afurg.com.br/assets/ckfinder/userfiles/files/96809202239.pdfIn PDF document text
  • https://goodmix-psc.com/userfiles/files/63294077776.pdfIn PDF document text
  • http://elisa5888.com/shopadmin/upload/files/49841464207.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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