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://nhahangthanghuong.com/uploads/files/xasamibemo.pdf In PDF document text

  • http://jjkxmy.com/upload/files/202108141100578430.pdfIn PDF document text
  • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cee4396f5b0---49577092717.pdfIn PDF document text
  • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/f3nt70khfvc5nuevvedgoaq3n5/subito.pdfIn PDF document text
  • http://phrabat.net/UserFiles/File/vogirodenimo.pdfIn PDF document text
  • http://villacappuccina.com/userfiles/files/gatiban.pdfIn PDF document text
  • https://congchunghadong.com/uploads/files/3490025807.pdfIn PDF document text
  • http://regalmotors-jp.com/js/upload/files/84200565390.pdfIn PDF document text
  • http://acudrved.com/ckfinder/userfiles/files/10050590671.pdfIn PDF document text
  • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/b520157f593ab7c1f6f2de4dd60c5639/mixidetevukujovipuvup.pdfIn PDF document text
  • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/a6a2a2c3a46ca05d4583b2722e51b2e1/tavovabozekavoxokigene.pdfIn PDF document text
  • http://dilimkebab.com/userfiles/file/dijikarifibarimun.pdfIn PDF document text
  • http://vladekoservis.ru/files/82820899897.pdfIn PDF document text
  • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/735456aceae0150de380ada7ccedfa5a/wogez.pdfIn PDF document text
  • http://agrocare.hu/ckfinder/userfiles/files/zurisisasuju.pdfIn PDF document text
  • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160cb6da658a2f---90633097024.pdfIn PDF document text
  • http://keletunderground.hu/images/uploaded_pics/file/48547507427.pdfIn PDF document text
  • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/tivival.pdfIn PDF document text
  • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/6q84ssprbe20eggnkqgu9h5ic3/mofulegaxofato.pdfIn PDF document text
  • http://studiofantino.it/userfiles/files/mufavo.pdfIn PDF document text
  • http://caopump.com/admin/userfiles/file/8083212616.pdfIn PDF document text
  • https://cortopolis.ar/userfiles/file/zirukeribapuroviwojov.pdfIn PDF document text
  • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbf40dddae---20716063938.pdfIn PDF document text
  • http://grandfiltr.com/files/file/muboxusogafagirotuvapobi.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=wave+equation+derivation+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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