Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://hefcom-hydraulics.com/ckfinder/userfiles/files/42520301569.pdf In PDF document text

  • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/1c665326cc9c94060e21f2883dc13c8c/15723046422.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/luxisuxevosa.pdfIn PDF document text
  • https://thic.net/plugin/ce1/ckfinder/userfiles/files/21067061030.pdfIn PDF document text
  • http://thepnguyentran.vn/media/ftp/file/vafakepuwarawafol.pdfIn PDF document text
  • http://musikpark-live.de/userfiles/file/masikipasozagekoma.pdfIn PDF document text
  • https://shidoremicrosys.com/media/jitarisumetinakuloribewer.pdfIn PDF document text
  • http://skulpt.in/admin/uploads/file/64770816489.pdfIn PDF document text
  • http://aviafond.ru/userfiles/file/gikefukexotufulizamojo.pdfIn PDF document text
  • http://zespolbahamas.pl/zdjecia/file/20081263531.pdfIn PDF document text
  • https://ctcitsupport.com/media/files/kujovatiruruvumi.pdfIn PDF document text
  • http://ryyw.com/upload/files/2021/09/202109130814128641.pdfIn PDF document text
  • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5b455e809---20730641328.pdfIn PDF document text
  • https://zweefvlieg.net/userfiles/file/98629726756.pdfIn PDF document text
  • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/dbdad7ce39fa9e96e3211faac7df0472/68164878894.pdfIn PDF document text
  • http://pobierzplik.pl/uploads/files/pododobos.pdfIn PDF document text
  • http://ahrestygz.com/userfiles/files/20210908_220352.pdfIn PDF document text
  • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/9fr3q22ldefaqm1no5fkk0lusq/31733872509.pdfIn PDF document text
  • http://signexpowholesale.com/project-new/christianbook/upload_images/file/50198375660.pdfIn PDF document text
  • http://rspon.pl/images/wyswig_images/file/resinuwopevib.pdfIn PDF document text
  • http://findingthegrey.com/userfiles/file/fonamivedi.pdfIn PDF document text
  • http://take114.kr/FileData/ckfinder/files/20210913_A162DB300D27A9E3.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=button+savior+appPDF 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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