Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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 http://gd-weimi.com/upfolder/e/files/20210909030935.pdf In PDF document text

  • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/nuputiv.pdfIn PDF document text
  • http://e-district.org/userfiles/file/78962682296.pdfIn PDF document text
  • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/360223738b59f25708dc9296309838cb/salogupigimufonizabasudu.pdfIn PDF document text
  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613936b09f737---dizefol.pdfIn PDF document text
  • http://dtyxbpzx.com/filespath/files/20210901112429.pdfIn PDF document text
  • http://tc-muehlacker.de/data/tcmuehlacker/userfiles/file/35506218991.pdfIn PDF document text
  • http://air-separation-supplier.com/d/files/xunosafuwowovikejedufevo.pdfIn PDF document text
  • http://avsa.org/sites/default/files/images/files/sogagikebigab.pdfIn PDF document text
  • https://office-agglo-larochelle.fr/userfiles/file/35359241711.pdfIn PDF document text
  • http://garageanything.com/js/upload/files/bamubewanuvejibapum.pdfIn PDF document text
  • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613bdf894991f---fitegiz.pdfIn PDF document text
  • http://atletika-pardubice.cz/files/file/rigewosofogivukegawuleze.pdfIn PDF document text
  • https://adikketiga.com/contents/files/84489740778.pdfIn PDF document text
  • http://kirche-treuen.de/UserFiles/File/surek.pdfIn PDF document text
  • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/mqq4kededhg31gel9je7n06s78/jobatasevuxefufiratuvub.pdfIn PDF document text
  • http://fanghsin.com/uploads/files/202109092006155911.pdfIn PDF document text
  • https://hkparkkonutlari.com/image/files/kenadedebew.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/doruwawoxuwa.pdfIn PDF document text
  • http://mingzhicc.com/userfiles/files/jadiwumilidoparexetaz.pdfIn PDF document text
  • http://twozonechickenlasvegas.com/uploads/files/wofijolalapeje.pdfIn PDF document text
  • http://www.pattyn360.com/upload/forum/files/kefidevepexitozup.pdfIn PDF document text
  • https://certifiedcollisionrepair.com/home/cert/public_html/ckfinder/userfiles/files/tazorevedonenatoj.pdfIn PDF document text
  • http://nufilm.live/movie/335983In PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=venom+stream+freePDF link annotation
  • http://s250801404.onlinehome.fr/img/uploaded/file/pibuwerijikugafoxa.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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