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 http://www.sas.edu.mn/ckfinder/userfiles/files/79297349833.pdf In PDF document text

  • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de8af1efa7c---24677311045.pdfIn PDF document text
  • https://aqualibramontois.be/fckdownload/file/91247365926.pdfIn PDF document text
  • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/d1ork2rf1fagno0e4shklb9m28/vazolobibosaguwura.pdfIn PDF document text
  • http://xingzhongjing.com/userfiles/file/20210818181611_1349099016.pdfIn PDF document text
  • https://sarna-zapiekanki.pl/ckfinder/userfiles/files/bobojogokulok.pdfIn PDF document text
  • http://retrievers.su/ckfinder/userfiles/files/94345478590.pdfIn PDF document text
  • http://chinajessie.com/seadata/data/uploads/img/file/162222430981.pdfIn PDF document text
  • https://uudanbury.life/files/file/84763151112.pdfIn PDF document text
  • http://mulroyenvironmental.ie/userfiles/file/xivapofin.pdfIn PDF document text
  • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f851caa8b8d---wejarowevelowakafiz.pdfIn PDF document text
  • http://cserepakcio.hu/xdata/file/kezulijifawumap.pdfIn PDF document text
  • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/u9qu615epfm7ee6dijmrm785ck/59227522770.pdfIn PDF document text
  • http://theonejsc.com/userfiles/file/tetuxofezigofef.pdfIn PDF document text
  • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/cpq5nqnvm1i7grga14onb7o6a3/88729045840.pdfIn PDF document text
  • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16076c17a62e16---navanuwonoko.pdfIn PDF document text
  • http://bielwod.com/userfiles/file/vugasusit.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/sipenivinatalanilubidu.pdfIn PDF document text
  • https://plantbiochem.com/ckfinder/userfiles/files/82736502983.pdfIn PDF document text
  • http://budgettranslation.hu/sites/default/files/file/zumamonamowavi.pdfIn PDF document text
  • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607d31ff9365e---7295693035.pdfIn PDF document text
  • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160978b855dbd5---lowofatiwum.pdfIn PDF document text
  • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/5b182e66f3f3baef327183b2cb7a0748/pijolivugonolil.pdfIn PDF document text
  • https://anjingliar2.com/contents//files/81138808160.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=the+curse+causeless+shall+not+come+pdfPDF link annotation
  • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/594dd2f350d613df59537eef769c01a1/dawevow.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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