Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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://pixomot.ru/uplcv?utm_term=unlock+android+lock+screen PDF link annotation

  • https://ww150005.linebot.net/upfile/files/20210906170128.pdfIn PDF document text
  • http://nadiadsa.org/userfiles/file/44527953328.pdfIn PDF document text
  • http://shopphutungmayphat.com/upload/img/files/65991979583.pdfIn PDF document text
  • http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/jubijida.pdfIn PDF document text
  • http://a-b-i-s.net/layout/bilder/file/pafegorinarezarome.pdfIn PDF document text
  • https://atlastoursntravels.com/userfiles/file/wemepu.pdfIn PDF document text
  • http://fkm-lux.by/var/upload/file/zetexoloz.pdfIn PDF document text
  • https://bursakaynak.net/userfiles/file/87090986482.pdfIn PDF document text
  • https://monamifrance.com/FileData/ckfinder/files/20210908_92369F4842490CF0.pdfIn PDF document text
  • http://plusdesignwebsite.com/userfiles/file/sapogazumosa.pdfIn PDF document text
  • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/f5c28a0e3e816fdb528ccd8a853db9ed/gekitowupudeliraselul.pdfIn PDF document text
  • https://www.scmsgroup.org/ckfinder/userfiles/files/67302491741.pdfIn PDF document text
  • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613096b40050e---wunupekifiwizuvamedula.pdfIn PDF document text
  • http://dragoniresorts.com/userfiles/74585759358.pdfIn PDF document text
  • http://dh-cell.com/ckfinder/userfiles/files/32035522651.pdfIn PDF document text
  • http://camonetinternational.com/files/file/39274540929.pdfIn PDF document text
  • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/8c7682ad3c80a5726d7fb1238e5021dc/nesovaf.pdfIn PDF document text
  • http://vuoncotichdep.com/upload/files/pajejixo.pdfIn PDF document text
  • http://transcash.com/ci/userfiles/files/xiputejekiwumevit.pdfIn PDF document text
  • http://glassick.com/userfiles/file/megumipis.pdfIn PDF document text
  • http://cmtoolsrental.com/user_img/files/42886373368.pdfIn PDF document text
  • http://myxroad.net/upload/userfiles/file///detisutonejuvilexojes.pdfIn PDF document text
  • http://resheto.ru/users_images/fck/file/xuripaxevaxalomozupemowov.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/7967233340.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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