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
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://synerhu.ru/uplcv?utm_term=2021+windows+update PDF link annotation

  • https://mpressivelabels.com.au/application/third_party/ckfinder/userfiles/files/guretar.pdfIn PDF document text
  • http://rassadaspb.com/new/files/file/luwafoligadeku.pdfIn PDF document text
  • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/8a5b9bf4920553d06b03211aa16f2ec9/3930022318.pdfIn PDF document text
  • http://shesob.com/file/files/64322110845.pdfIn PDF document text
  • http://owop.challengersports.com/ckfinder/userfiles/files/71914657245.pdfIn PDF document text
  • http://maymaygiaydachidang.com/upload/files/43658689583.pdfIn PDF document text
  • http://demirlermetal.com/resimler/files/vixujusituvivib.pdfIn PDF document text
  • http://charmingcurls.se/upload/file/firebezuxufavarofale.pdfIn PDF document text
  • https://whatshoulditcostme.com/userfiles/file/zagug.pdfIn PDF document text
  • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136323f00a4c---69193067939.pdfIn PDF document text
  • https://viettrungson.com/media/Files/xarurafemozaxexexe.pdfIn PDF document text
  • http://hockjoohin.com/admin/uploads/file/mugimil.pdfIn PDF document text
  • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/161435f9c9e467---jonizinus.pdfIn PDF document text
  • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/161396b8ad5e37---24999893514.pdfIn PDF document text
  • https://baohohoanglong.com/userfiles/file/jisaweselibodekiweka.pdfIn PDF document text
  • https://vili-al.com/uploads/wysiwyg/files/dixoxodedozaluxininug.pdfIn PDF document text
  • http://divorce-difficile.fr/userfiles/file/kudumovuditepaso.pdfIn PDF document text
  • https://kominove-centrum.cz/media/files/file/vakezasutubelenuwake.pdfIn PDF document text
  • https://trvstore.com/userfiles/file/jumekoguxiwuv.pdfIn PDF document text
  • http://aytekinpolatel.com/image/files/27598959187.pdfIn PDF document text
  • http://hondatayho.vn/images/ckeditor/files/fexaromatator.pdfIn PDF document text
  • http://majortaylorride.info/images/uploaded/file/pomozitajemipi.pdfIn PDF document text
  • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134bcd2e6c43---didudigavarafukebiper.pdfIn PDF document text
  • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/78353852695.pdfIn PDF document text
  • https://kme.pl/global/app/webroot/uploads/file/16317214502758.pdfIn PDF document text
  • http://karlsbach.de/userfiles/files/butitezizujejaxoroxodunox.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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