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
• PHP webshell / backdoor source critical WEBSHELL_PHP
  The file contains PHP server-side code with the signature of a webshell/backdoor (named PHP webshell banner (madspot)). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
• 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://conexus-study-abroad-travel.com/ckfinder/userfiles/file/13334065635.pdf In PDF document text

  • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/e088894981305d9dcd230c7575de5fd8/puvagixodulanira.pdfIn PDF document text
  • http://barcelonasixtytwo.com/userfiles/file/64302820500.pdfIn PDF document text
  • http://goshaggers.com/clients/2/2c/2ce39afd4341152949bc146f79210d6f/File/lizovas.pdfIn PDF document text
  • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/8ab60ec1188d670e769938ec60b88994/29488592158.pdfIn PDF document text
  • http://bioscipublisher.com/files/upfiles/file/16892185561.pdfIn PDF document text
  • http://capital96.com/userfiles/file/gakovapozojoxufi.pdfIn PDF document text
  • https://madspot.dk/ckfinder/userfiles/files/mekumixofibejut.pdfIn PDF document text
  • http://cafehinglung.com/uploads/files/95428811308.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759d3242ca9---paganutilubafot.pdfIn PDF document text
  • http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/594a614c2bda4fb71954be4c1c0869b7/kuvorizil.pdfIn PDF document text
  • https://facades-et-traditions.com/actualites/file/fonija.pdfIn PDF document text
  • https://cdpu.net/wp-content/plugins/super-forms/uploads/php/files/23505b0315c5b471ba36d82dba116242/29794837625.pdfIn PDF document text
  • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/233mu9985lffkeg8786k26o7i1/24447483717.pdfIn PDF document text
  • http://vipforiraq.com/userfiles/files/xuvijevejurujor.pdfIn PDF document text
  • https://cgeminfos.ma/upload/file/zaxuwulelosexof.pdfIn PDF document text
  • http://canoto.us/Images_upload/files/luxobiserebu.pdfIn PDF document text
  • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985e8cc0d7f---xixetuxugis.pdfIn PDF document text
  • https://playerpress.com/ckfinder/userfiles/files/90717423833.pdfIn PDF document text
  • http://hugslock.com/app/webroot/img/files/88127760840.pdfIn PDF document text
  • http://rebeccafantarchitetto.it/userfiles/files/nutobariweraged.pdfIn PDF document text
  • https://insolite.lu/img/userfiles/files/34990780531.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=tecnicas+de+investigacion+social+ezequiel+ander+egg+libro+completo+pdfPDF 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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