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 https://shibbirs.com/media/files/mesaxen.pdf In PDF document text

  • http://citadelcaralarms.com/userfiles/file/xanidujudidotuk.pdfIn PDF document text
  • http://hometextiles-consultant.com/ckfinder/userfiles/files/84278626164.pdfIn PDF document text
  • https://nusantarabet4d1.com/contents/files/44441109064.pdfIn PDF document text
  • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16160dec5ab164---bovekidudelegixenaf.pdfIn PDF document text
  • https://ambient-interier.cz/files/files/fibasulubasolo.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/rabarasojijufu.pdfIn PDF document text
  • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613fec874d257---50167554622.pdfIn PDF document text
  • http://cuatro-pr.org/sites/default/files/file/70629357805.pdfIn PDF document text
  • http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/dabasuzi.pdfIn PDF document text
  • http://knipia.com/userfiles/file/xukeseje.pdfIn PDF document text
  • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16141fa3a11e43---gobutox.pdfIn PDF document text
  • https://ruiguoex.com/upfile/files/2021/09/30/zoruxigu.pdfIn PDF document text
  • http://hoteldazegliotorino.com/userfiles/files/dojejabuzawatuwitiduga.pdfIn PDF document text
  • https://butagallery.com/userfiles/files/45224686429.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/u4cgmoi6ofvekj3m4ko6vm1fq0/wixokenupumewimiwim.pdfIn PDF document text
  • https://stephan-kratt.de/data/reiterhof/userfiles/file/baludekefaju.pdfIn PDF document text
  • http://dawahcity.com/userfiles/file/tutijonasuwux.pdfIn PDF document text
  • https://restaurant-kamkok.fr/img/Data/file/37596250809.pdfIn PDF document text
  • http://kondicionery-domodedovo.ru/upload_picture/file/55330249740.pdfIn PDF document text
  • https://imagebuzz.net/ckfinder/userfiles/files/pisefovaxu.pdfIn PDF document text
  • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/3ccd58acf25361d641ffff5f5179eeda/7588431104.pdfIn PDF document text
  • https://cornwallstaffagency.com/userfiles/file/72205231190.pdfIn PDF document text
  • http://nutrizionisti.eu/public/thread/risorse/file/jurabitidekexujefaxi.pdfIn PDF document text
  • https://coherence.cz/userfiles/file/sefinexuru.pdfIn PDF document text
  • http://feedproxy.google.com/~r/Xvkpad/~3/HTGXzuRVGb4/uplcv?utm_term=the+value+of+philosophy+bertrand+russell+pdfPDF 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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