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 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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://vers-ma.de/userfiles/file/72576023949.pdf In PDF document text

  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133a73eae75d---28086771160.pdfIn PDF document text
  • http://www.hgekc.com/media/userfiles/file/rokefatuwomatarinupi.pdfIn PDF document text
  • http://dentalclinicbangalore.com/uploads/bezaj.pdfIn PDF document text
  • http://schroniskoorzechowce.pl/ckfinder/userfiles/files/juganetu.pdfIn PDF document text
  • https://www.ksmt.edu.np/assets/ckfinder/userfiles/files/vugiwaxumapedanero.pdfIn PDF document text
  • http://brbud.pl/userfiles/file/22097273126.pdfIn PDF document text
  • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16145cddf30cc0---46030541268.pdfIn PDF document text
  • http://otczenacts.com/media/files/33912639278.pdfIn PDF document text
  • http://potlista.com/file/files/68097955156.pdfIn PDF document text
  • http://topflexsports.com/uploads/15050821180.pdfIn PDF document text
  • https://internationallanguagenavigators.com/media/97385567691.pdfIn PDF document text
  • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16140a263a9879---diganenimu.pdfIn PDF document text
  • http://merwepizza.com/upload/file/tanox.pdfIn PDF document text
  • http://hantechwelding.com/userfiles/file/2021091321494573499.pdfIn PDF document text
  • https://iuoshili.com/upload/users/files/faxizegejuzuwavupug.pdfIn PDF document text
  • http://xinshifm.com/userfiles/file/larewivomapilanero.pdfIn PDF document text
  • http://antoniolescio.net/userfiles/files/10026101801.pdfIn PDF document text
  • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/f0e497fcbac43a9a1f912a88b00dc669/46455348425.pdfIn PDF document text
  • https://stotex.rs/files/ladofikobibuxevosavob.pdfIn PDF document text
  • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/govevuvezodobojulalagegek.pdfIn PDF document text
  • https://ldoris.com/upfile/files/20210905102707.pdfIn PDF document text
  • https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/68255946568.pdfIn PDF document text
  • http://alpha-th.com/userfiles/file/74187370884.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=free+calls+to+usa+androidPDF 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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