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://krisoc.ru/uplcv?utm_term=photo+lab+hack+apk+download PDF link annotation

  • http://totoumi.jp/upload/file/51671293483.pdfIn PDF document text
  • https://nhatngudongkinh.com/upload/ckupload/files/84424122713.pdfIn PDF document text
  • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c7b59ec79---viwobebuvenuweko.pdfIn PDF document text
  • http://foto-recepty.sk/images/fotky/dajujap.pdfIn PDF document text
  • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/d59789e5f4ece119882efc1ea912779e/53232206423.pdfIn PDF document text
  • http://xn----otbb6ahq3d.xn--p1ai/ckfinder/userfiles/files/29774499960.pdfIn PDF document text
  • http://conditum.nl/userfiles/file/tibavosakexipituvejabapat.pdfIn PDF document text
  • https://www.highettmetal.com.au/application/third_party/ckfinder/userfiles/files/zorotagevalekeleneno.pdfIn PDF document text
  • http://karaokejdi.com/ckfinder/core/connector/php/upload/files/96404341032.pdfIn PDF document text
  • https://harom.ro/files/file/jukuzuto.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614286c57d412---saxekej.pdfIn PDF document text
  • http://studiofagiani.eu/userfiles/files/86221727549.pdfIn PDF document text
  • http://ventima.ru/userfiles/file/putowejofunitixixifoxe.pdfIn PDF document text
  • http://prttour.ca/FileData/ckfinder/files/20210903_061B91998709DA45.pdfIn PDF document text
  • https://needletherapy.eu/upload/file/jisipizetorikixirabu.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/guwofumegosizifunowe.pdfIn PDF document text
  • http://elsped.hu/files/file/mevosovofejex.pdfIn PDF document text
  • https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/90085174419.pdfIn PDF document text
  • http://vitacanes.com/uploads/files/22361276965.pdfIn PDF document text
  • http://kolbiko.com/images/uploads/file/91401496870.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/sfmhvk20g6ufmihcibin44rgr6/16459451466.pdfIn PDF document text
  • https://reklama71.ru/upload_picture/kumimegukebuwafutaka.pdfIn PDF document text
  • https://jss-moms.si/upload/File/58100442073.pdfIn PDF document text
  • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613579f4d81d9---99499602526.pdfIn PDF document text
  • http://dnepropress.net/files/file/42551587712.pdfIn PDF document text
  • http://niengrangchuyensau.com/upload/contentFile/file/46678717479.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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