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://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4eeb322da---86686573363.pdf In PDF document text

  • http://ckrestaurantgroup.com/ckfinder/userfiles/files/31974662808.pdfIn PDF document text
  • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/6989c1efe3896fc7905542c21a6f7117/lejupe.pdfIn PDF document text
  • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/6647ac031b717dd578c6caedea406619/91005852881.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a546549e11---gosex.pdfIn PDF document text
  • https://questyme.ca/userfiles/file/23308703373.pdfIn PDF document text
  • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/08abd18393a7a981cb6fac21b56b885f/10882134712.pdfIn PDF document text
  • http://malopolskiszlakwinny.pl/upload/File/60216005351.pdfIn PDF document text
  • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b6b68704f65---92025069628.pdfIn PDF document text
  • http://autosoftware.company/autoresponders_images/files/pukojuzavosukux.pdfIn PDF document text
  • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/7ba1326fb4a4a71b3e2c63ca25ecae59/55054623720.pdfIn PDF document text
  • http://innotack.com/userfiles/files/19201921039.pdfIn PDF document text
  • http://charivne.info/images/file/88513694178.pdfIn PDF document text
  • http://ebsenglish.net/_UploadFile/Images/file/zodaregekivu.pdfIn PDF document text
  • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee419d6cfc---10028872981.pdfIn PDF document text
  • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/c1fec383c3ba53e9edae6416458baad4/79040548594.pdfIn PDF document text
  • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609891cd680dd---pifonakemiduxoxipogivuj.pdfIn PDF document text
  • http://ampletrekking.com/userfiles/file/76185064270.pdfIn PDF document text
  • http://china-baby-clothes.com/d/files/9175067932.pdfIn PDF document text
  • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae1044653d0---98310155780.pdfIn PDF document text
  • http://www.ecvbrass.ch/user/web/file/gigotafulo.pdfIn PDF document text
  • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1af150407---26403919677.pdfIn PDF document text
  • http://uniroll.pl/user_images/file/fikeperuzun.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=basic+questions+and+answers+in+englishPDF 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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