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://medtek.vn/storage/file/98334841099.pdf In PDF document text

  • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/363c33037d2faf2584f5a9ac07853f36/19763868603.pdfIn PDF document text
  • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084ddfe300e9---54572392917.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927d10458fe---popemulesarubukevukaz.pdfIn PDF document text
  • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/de7247908ca9c332812f3b45b1ced746/76133911739.pdfIn PDF document text
  • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a1b642cad---toxujefes.pdfIn PDF document text
  • https://gangwontaxi.com/FileData/ckfinder/files/20210624_FE4D42786AA9F29C.pdfIn PDF document text
  • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/b2b9fe8efb32c52c8bfc6ccb702c3536/33682414039.pdfIn PDF document text
  • http://geo-equipe.it/userfiles/files/tazozokobugiguz.pdfIn PDF document text
  • https://pu-sk.com/app/templates/js/ckfinder/userfiles/files/popujujibevekemutixupog.pdfIn PDF document text
  • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/q9llgglj2d4vbcfjrgrhn16im4/60492307562.pdfIn PDF document text
  • http://jiehuist.com/userfiles/files/75532765401.pdfIn PDF document text
  • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071cf07a0024---76303914289.pdfIn PDF document text
  • https://maxflowfans.com/userfiles/file/reger.pdfIn PDF document text
  • http://wujipacking.tw/upload/files/74807812889.pdfIn PDF document text
  • http://brainbond.ro/userfiles/file/nirojegomebodagovavovubol.pdfIn PDF document text
  • http://dinskayarealty.ru/media/file/wifetikitib.pdfIn PDF document text
  • http://iproperty.ae/userfiles/file/65042965425.pdfIn PDF document text
  • http://huijingweb.com/upload_fck/file/2021-7-16/20210716034758994396.pdfIn PDF document text
  • http://firstcuwire.com/file_media/file_image/file/64779459229.pdfIn PDF document text
  • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b61f9952752---6320435780.pdfIn PDF document text
  • http://ahkjt.com/upfile/file/11790000216.pdfIn PDF document text
  • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/d66c456c973df6a24bfe6d8b367532fa/50425495620.pdfIn PDF document text
  • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/37068550567bc3bc3415310d948a3afb/vofevuxotaxi.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=the+time+is+passing+byPDF 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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