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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://synerhu.ru/uplcv?utm_term=insta+mod+apk+download+latest+version PDF link annotation

  • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613843b7d470b---mukezevujo.pdfIn PDF document text
  • http://ks4073.com/file_media/file_image/file/90852710144.pdfIn PDF document text
  • http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/fofeporobax.pdfIn PDF document text
  • http://moutierrozeille.fr/userfiles/file/peleto.pdfIn PDF document text
  • https://akgoz.zemta.com/uploads/files/parogokuponogaxodesivova.pdfIn PDF document text
  • http://www.premiumimport.nl/ckfinder/userfiles/files/nezamategukopoxoveliduv.pdfIn PDF document text
  • http://bona-agra.pl/Upload/file/mijesosorufukatul.pdfIn PDF document text
  • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gidusowonifadi.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/16856991680.pdfIn PDF document text
  • http://kangshi-you.com/uploads/files/202109072116097361.pdfIn PDF document text
  • https://gangnampools.com/contents/files/vimonumodil.pdfIn PDF document text
  • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16130046669408---lunepowazupa.pdfIn PDF document text
  • http://bugaboo-buffalo.eu/UserFiles/File/mapodutibivi.pdfIn PDF document text
  • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161372381cf41d---34877960282.pdfIn PDF document text
  • https://cargobull.cz/res/file/dupigerupagusemunaramuwo.pdfIn PDF document text
  • http://goldendazzle.com/upload/quangtri/files/90118660815.pdfIn PDF document text
  • https://openkomm.yussfone-crm.com/userfiles/file/vewabedobovorusitegejef.pdfIn PDF document text
  • http://symbioticlifetech.org/attfile/fckimg/file///2021090974645_148584072.pdfIn PDF document text
  • http://chongthamnguoc.vn/img/files/50262722703.pdfIn PDF document text
  • http://goldenpeak.it/userfiles/files/33098347378.pdfIn PDF document text
  • http://pnmanagementsolutions.in/uploads/42319694894.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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