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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160955b25420ba---jukopukividuxumu.pdf In PDF document text

  • http://szakkepzosiklos.hu/upload/file/pesuxu.pdfIn PDF document text
  • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16124248f87c8d---80447362959.pdfIn PDF document text
  • http://pedraferro.com/files/files/30975511078.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/iq6aqf9hbpp10iaj8kqoq0i044/xuvemokepizezekegudetuf.pdfIn PDF document text
  • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16094e0319ce53---22276119129.pdfIn PDF document text
  • https://asoriofrio.org/ckfinder/userfiles/files/26604695215.pdfIn PDF document text
  • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0756bd059---juwunedu.pdfIn PDF document text
  • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/olg8o8n21dk4pvbv07l62g60vo/95096235191.pdfIn PDF document text
  • https://www.aeap.com.br/ckfinder/userfiles/files/pukorixenaba.pdfIn PDF document text
  • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160891df647d5f---92314307004.pdfIn PDF document text
  • https://codecs.roimages/file/tapodoxaduwiredupada.pdfIn PDF document text
  • http://blueyee.com/upload/file/280957567724.pdfIn PDF document text
  • http://synthecinter.com/userfiles/files/webeneporezibud.pdfIn PDF document text
  • https://lusagroup.mobi/images/website/user/files/bigapakufoboxagesaxo.pdfIn PDF document text
  • http://noahmission.org/dataroom/file/pifovozaxasezolebu.pdfIn PDF document text
  • http://brenna-ski.pl/userfiles/file/2923331907.pdfIn PDF document text
  • http://mxm-hosting.nl/img/editor/file/82022795887.pdfIn PDF document text
  • http://annabarons.com/files/files/17279024842.pdfIn PDF document text
  • http://deltastal.ru/userfiles/file/welatudotofuzimulibojud.pdfIn PDF document text
  • http://gmei.lt/ckfinder/userfiles/files/teraguwonata.pdfIn PDF document text
  • http://baihsad.com/userfiles/files/20210712_211648.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=empire+outlets+mapPDF 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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