Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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 https://ketchas.ru/uplcv?utm_term=acsm+a+pdf+calibre PDF link annotation

  • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/db189dfbda11adc0e515d7b4e6d4b3b1/65456582786.pdfIn PDF document text
  • http://manavpublicschool.org/manav/userfiles/file/bilamijigukemojeg.pdfIn PDF document text
  • http://www.bash.cl/media/file/xidikef.pdfIn PDF document text
  • https://ceccargiurgiu.ro/userfiles/file/98667149434.pdfIn PDF document text
  • http://www.fashiongale.ro/userfiles/files/ruketofitadisaxinabamefoz.pdfIn PDF document text
  • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/3081967711e93d11f01fffd5cafeab66/moxiperezixiguxamarita.pdfIn PDF document text
  • http://abwrichmond.com/uploads/files/37271736912.pdfIn PDF document text
  • https://propactionvehiclesuk.tv/userfiles/files/80732645315.pdfIn PDF document text
  • http://hiace-yoshikawa.com/js/upload/files/zowezuro.pdfIn PDF document text
  • http://dh-cell.com/ckfinder/userfiles/files/gojirirunowopekududo.pdfIn PDF document text
  • http://sapientgenerator.ru/files/userfiles/files/sukajamuzisuze.pdfIn PDF document text
  • http://donghozibistore.com/luutru/files/zevizofuviviwuwonejinoxi.pdfIn PDF document text
  • http://cauthangdep24h.com/upload/files/dorug.pdfIn PDF document text
  • http://tyextractor.com/d/files/begonosevanusemeditafo.pdfIn PDF document text
  • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/chea35b5mkudkg3lv56gr0kv07/32276103400.pdfIn PDF document text
  • https://democv.associasuite.com/imagenes/contenidos/files/55134226844.pdfIn PDF document text
  • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1614229dbc6c5b---2579792025.pdfIn PDF document text
  • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614112244f100---38766921373.pdfIn PDF document text
  • http://www.velkoobchod-man.eu/ckfinder/userfiles/files/29546115555.pdfIn PDF document text
  • http://ctkupavna.ru/upload/file/44297648694.pdfIn PDF document text
  • http://jamones-luna.shopcloud.es/ckfinder/userfiles/files/ruzuxegalumuvugalesim.pdfIn PDF document text
  • http://beautifulmoda.com/userfiles/files/45995320958.pdfIn PDF document text
  • https://pointswestliving.com/ckfinder/userfiles/files/wisofatazusurugilaxujorez.pdfIn PDF document text
  • http://investgeorgia.ge/userfiles/file/42983197443.pdfIn PDF document text
  • http://aptekadc.pl/userfiles/userfile/natisojepasewupozurakol.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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