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.
• Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
  PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
• 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://www.uflo.edu.ar/ckfinder/archivos/documentos/nonenazunitaragapaxuse.pdf In PDF document text

  • http://178.62.148.222:300/ckeditor/ckfinder/userfiles/files/xazotezunobupe.pdfPDF link annotation
  • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/xedop.pdfIn PDF document text
  • http://lnimeina.it/userfiles/files/53034043855.pdfIn PDF document text
  • http://marathon-gexin.com/Uploadfiles/files/91107912248.pdfIn PDF document text
  • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146755004c08---83500577468.pdfIn PDF document text
  • https://ww150003.linebot.net/upfile/files/20210907032634.pdfIn PDF document text
  • https://mk-sito.it/uploads/file/falutifubirejajufi.pdfIn PDF document text
  • http://jinruily.com/UploadFile/file/20210913180534291.pdfIn PDF document text
  • http://novafish.it/userfiles/files/83133793661.pdfIn PDF document text
  • https://sicurezzaips.it/uploads/file/4728292900.pdfIn PDF document text
  • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1614446ebef9a6---26980440745.pdfIn PDF document text
  • https://ou-ravda.com/ckfinder/userfiles/files/76042348290.pdfIn PDF document text
  • https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/xekela.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/78882313792.pdfIn PDF document text
  • http://a2itsolutions.com/chop/multimedia/userfiles/file/57890163428.pdfIn PDF document text
  • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/8536c25dbe58ab8ec018a4eea44dea69/15898142488.pdfIn PDF document text
  • http://boldogelet.hu/media/26292964579.pdfIn PDF document text
  • http://csc021.com/userfiles/file/20210919073236_pysyuo.pdfIn PDF document text
  • http://glina-master.ru/admin/ckfinder/userfiles/files/36539478822.pdfIn PDF document text
  • https://10s317.com/uploads/files/202109172345286392.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=persona+4+ps2+walkthroughPDF 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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