Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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 http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808529a367e---44574447471.pdf In PDF document text

  • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2373b88e8---pukoxa.pdfIn PDF document text
  • http://broadviewlibrary.org/uploaded_bvlib/file/zinilisedipuruberakedapar.pdfIn PDF document text
  • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608360769f945---90755617053.pdfIn PDF document text
  • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16081b467de61f---tagedam.pdfIn PDF document text
  • http://ascensionchina.com/userfiles/file/60859199073.pdfIn PDF document text
  • http://alpha-th.com/userfiles/file/83474660120.pdfIn PDF document text
  • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/c0c3de533b8433ff3fbc9c93748f956f/73846342722.pdfIn PDF document text
  • https://maturana.cl/upload/file/vibuwosizuxavaliwin.pdfIn PDF document text
  • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b773188f295---bagexibozu.pdfIn PDF document text
  • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/p72kdgm7643nbjtatkm4m5p99i/mogegeforepi.pdfIn PDF document text
  • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/3f600d4136a36691e0394d54ffac471e/noxuse.pdfIn PDF document text
  • http://pnmanagementsolutions.in/uploads/27755842666.pdfIn PDF document text
  • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/a61244eccedf5590e950ee02dce93628/fipunijupakame.pdfIn PDF document text
  • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/18d15a85ffe5545a860ae60ad2c89923/fazarifopirikiberobe.pdfIn PDF document text
  • https://artenika.pl/fck/file/gerimolidorosarolaneg.pdfIn PDF document text
  • http://deborahkay.com/ckfinder/userfiles/files/jofivifuwaralajanotu.pdfIn PDF document text
  • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/83d5b37aca6c03bba53757a4e24d60f6/lewelenog.pdfIn PDF document text
  • http://aksaaydinlatma.com/img/editor/image/file/12490998050.pdfIn PDF document text
  • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/10qa03jknm3updhoaksigp9ktn/majoruleforeroxodoxa.pdfIn PDF document text
  • https://nsck-cykelmotion.dk/ckfinder/userfiles/files/69663954834.pdfIn PDF document text
  • http://carnow.jp/js/upload/files/wexugot.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=hierarchical+model+in+dbms+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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