Malicious PDF — malware analysis report

Heuristics 7

• 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 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://chcial.ru/uplcv?utm_term=reference+letter+for+healthcare+professional PDF link annotation

  • https://flexi-cms.com/uploads/file/25692954286.pdfIn PDF document text
  • http://ttmplus.com/userfiles/files/tuvevilejasu.pdfIn PDF document text
  • https://secolink.sk/userfiles/file/fotizipuxopojasap.pdfIn PDF document text
  • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609481e910118---zerebepalaxapafozakolojet.pdfIn PDF document text
  • http://merwepizza.com/upload/file/94738360480.pdfIn PDF document text
  • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/b0c748e4fa0ee1c38f29b88e2e040874/lawutivunarufudex.pdfIn PDF document text
  • http://ebd.su/UFD/7623/files/xegomuvitinifoza.pdfIn PDF document text
  • http://silatur.com/js/ckfinder/userfiles/files/wanimowefebolewufaveseti.pdfIn PDF document text
  • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ff811f302---40683998449.pdfIn PDF document text
  • http://batterseataxi.com/survey/userfiles/files/66021624881.pdfIn PDF document text
  • http://anm-av.de/uploads/files/69641319105.pdfIn PDF document text
  • http://vandientuchinhhang.com/upload/files/50797174573.pdfIn PDF document text
  • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/b114f4de051c02635477d114d3241f01/pininejutajisatolosedanod.pdfIn PDF document text
  • http://byecook.com/ckupload/files/vuluvepowuzuvodunek.pdfIn PDF document text
  • http://stalmost.pl/userfiles/file/gixapebab.pdfIn PDF document text
  • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1612ad3bb23500---levikizom.pdfIn PDF document text
  • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/t25p4op91rhju5eagv09sfblma/jezomefefarigaji.pdfIn PDF document text
  • http://palirna-frydek.cz/uploaded/file/pumemifamebozadojepo.pdfIn PDF document text
  • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/qj3l5uiok61nn7mfaoe8jpitm5/zizilu.pdfIn PDF document text
  • https://aquatrustfina.com/userfiles/file/61398680025.pdfIn PDF document text
  • http://szilasfood.hu/pic_upload/files/fiwuzivel.pdfIn PDF document text
  • https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/9466654d91f973d82e5243d5076d7db5/53491466020.pdfIn PDF document text
  • http://zatuchlina.cz/upload/file/sabibiwur.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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