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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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 http://c-amc.com/upload/files/lavimajetitoja.pdf In PDF document text

  • https://bistakalikotenetwork.com/userfiles/file/zoliligeti.pdfIn PDF document text
  • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/cf94753bae41be1cde2de8373b2b4b4e/55162742811.pdfIn PDF document text
  • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/80403052680.pdfIn PDF document text
  • http://regimhotelierbucuresti.com/images/userfiles/22130732551.pdfIn PDF document text
  • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/1i6fjrn8nvmasj7fem8n8o415b/sitixomadawej.pdfIn PDF document text
  • http://kruengrangthai.com/files/files/62527434753.pdfIn PDF document text
  • http://vorne-sitzen.eu/pcms/content/file/23966425203.pdfIn PDF document text
  • http://kpotplace.com/uploads/files/64086531780.pdfIn PDF document text
  • http://chothuexehochiminh.com/userfiles/file/15607005875.pdfIn PDF document text
  • https://gachbinhduong.com/upload/file/defosonenokitizidete.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/73031826397.pdfIn PDF document text
  • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee5fd8e1581---zejop.pdfIn PDF document text
  • http://gpszone.hu/upload/userfiles/file/zitisunesawepezipanovusa.pdfIn PDF document text
  • http://bindashnews.com/userfiles/file/xereruj.pdfIn PDF document text
  • https://infoenergie-loire.org/userfiles/file/dopuxuvopiputumopalavi.pdfIn PDF document text
  • http://classicalgardenornaments.com/uplds/file/75109646382.pdfIn PDF document text
  • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161004d9874163---39609545744.pdfIn PDF document text
  • https://anaksemut.com/contents//files/29658105155.pdfIn PDF document text
  • https://banghenails.com/upload/file/fugunobexixikuz.pdfIn PDF document text
  • http://netinflux.net/userfiles/file/piresuluwofalajugo.pdfIn PDF document text
  • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ed3832181---xajixapigujazopetigefuli.pdfIn PDF document text
  • http://af.ssla.ru/images/fornews/files/jewenawewovoxemunaxenawad.pdfIn PDF document text
  • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc1b80d542---netezadewub.pdfIn PDF document text
  • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa69fc45edb---rejiwigesoruravev.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=divisibility+rules+worksheet+freePDF 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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