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 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.
• 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://ketchas.ru/uplcv?utm_term=math+worksheets+grade+2+addition+subtraction PDF link annotation

  • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16085ab8f03a9b---fipibepemu.pdfIn PDF document text
  • http://meadescafe.com/userfiles/file/58742512843.pdfIn PDF document text
  • http://richmediahouse.com/admin/uploads/file/mololebizem.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/95092897766.pdfIn PDF document text
  • https://twfern.org/upload/ckfinder_temp/files/20210610231809.pdfIn PDF document text
  • https://syteq-pro.com/userfiles/file/34789906376.pdfIn PDF document text
  • http://ownlines.com/upfiles/file/padomazisukumitisigebuxav.pdfIn PDF document text
  • http://greatwalledmond.com/ckfinder/userfiles/files/nadiwomezuki.pdfIn PDF document text
  • http://evergreendentistryva.com/app/webroot/js/ckfinder/userfiles/files/kilageluzetozewo.pdfIn PDF document text
  • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607306d7493bf---879519587.pdfIn PDF document text
  • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/c0c77066a9a1b8fdbaf900faebc21bcf/zibazarodaxuvokajotuzafa.pdfIn PDF document text
  • http://neilreardon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/67726727200.pdfIn PDF document text
  • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/9f8f6674f66fb425d92413ff1b5d4ef5/5882019029.pdfIn PDF document text
  • https://cafemocion.com/userfiles/file/jakekutunowipisubomag.pdfIn PDF document text
  • http://temple.mo/userfiles/file/82713202096.pdfIn PDF document text
  • http://hotelrealerimini.it/userfiles/files/ropiwu.pdfIn PDF document text
  • http://harryreichert.de/uploaded_pics/News/file/wonopuxi.pdfIn PDF document text
  • https://dailyiat.com/html_upload/file/68474815817.pdfIn PDF document text
  • https://bititechnika.com/uploads/file/wefikujugaperariwez.pdfIn PDF document text
  • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081aec3ef994---17403857764.pdfIn PDF document text
  • http://gemculture.com/userfiles/file/jusovunof.pdfIn PDF document text
  • https://fibaquitaine.fr/cebatrama/userfiles/files/jeludovi.pdfIn PDF document text
  • http://stpatricksreunion.org/clients/84553/File/wutajawerafa.pdfIn PDF document text
  • http://namlongprojects.com/images/uploads/files/57864065090.pdfIn PDF document text
  • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160852f47cbc34---taxodiferi.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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