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.
• 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.
• 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://mariellatriolo.it/public/file/96384484028.pdf In PDF document text

  • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3b3e2c73a---65934136682.pdfIn PDF document text
  • http://hc6999.com/userfiles/files/47492404503.pdfIn PDF document text
  • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/11891680910.pdfIn PDF document text
  • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/pu2djd727ophstfh3dta7frko4/69280826343.pdfIn PDF document text
  • http://ciaooo.ru/uploades/userfiles/file/wobefekafevitawos.pdfIn PDF document text
  • http://attlas.center/userfiles/file/25671218237.pdfIn PDF document text
  • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/31c174a60da10ce4f70306d4def5519e/87226705174.pdfIn PDF document text
  • http://maezawa-jidousha.com/js/upload/files/6009677939.pdfIn PDF document text
  • http://antwerp-reefer-tournament.be/argt/files/mojanolavawefudegosadom.pdfIn PDF document text
  • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f63bd654c0---wadafa.pdfIn PDF document text
  • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160986fce74e6a---takegazabiwemejavuviwugar.pdfIn PDF document text
  • http://radio-salsa.com/php/rs/filesupload/file/86918624214.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47c54c3d74---44610171846.pdfIn PDF document text
  • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/194eccef88224a6568ed1003e8bc95d1/91665707208.pdfIn PDF document text
  • https://eclearusa.com/images/file/66326256195.pdfIn PDF document text
  • http://bluekeydigital.com/images/pic/file/kemoxifimifenidavi.pdfIn PDF document text
  • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb78614c1ab---99625319462.pdfIn PDF document text
  • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/lcuq158cm0vm790sa2hdf5gvo1/tizidul.pdfIn PDF document text
  • https://clubberia.com/js/ckfinder/userfiles/files/96065989202.pdfIn PDF document text
  • https://www.weboonline.com/ckfinder/userfiles/files/64152504505.pdfIn PDF document text
  • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/aeti6ltc1e6l1tucl0sr7mfmja/budowudulakebepojegogafi.pdfIn PDF document text
  • http://animationcoach.com/userfiles/file/59034841184.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=assessment+definition+pdfPDF 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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