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 https://inwebjor.ru/uplcv?utm_term=cpm+to+cpp PDF link annotation

  • https://hosrem.org.vn/ckfinder/userfiles/files/sovukeseranoramib.pdfIn PDF document text
  • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd152297fb---45311233751.pdfIn PDF document text
  • http://sbsedupatti.com/sbsedupatti/userfiles/file/mojevimatorigulodijum.pdfIn PDF document text
  • http://hum-lucknow.org/test/fckeditor/file/biwasojizuwomaw.pdfIn PDF document text
  • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/80f5cd81acfeb72294f444815c9bd30a/xerarenoxafoxaxumetebu.pdfIn PDF document text
  • https://mobilaide.com/upload/editor/file/fufes.pdfIn PDF document text
  • http://ajtoablakcentrum.com/_user/file/27601125405.pdfIn PDF document text
  • http://bajajsports.com/userfiles/file/68212524054.pdfIn PDF document text
  • http://nm-union.ru/ckfinder/userfiles/files/82536877751.pdfIn PDF document text
  • http://axiomestates.com/userfiles/file/87196686813.pdfIn PDF document text
  • http://kleni.cz/userfiles/file/30677751839.pdfIn PDF document text
  • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24b5f1487a---22138316938.pdfIn PDF document text
  • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b768f06baae---71624056859.pdfIn PDF document text
  • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/6e8eeafabac26678334507ef07eeccc7/lulomemoxelin.pdfIn PDF document text
  • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/491eba65779211a0301588ead63d61e4/motulevaxuwiwenenabakigan.pdfIn PDF document text
  • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/b3437805ba75f729d93a0ae23ccfe30f/lutesewikafepupawajumex.pdfIn PDF document text
  • http://uceng.net/_UploadFile/Images/file/73697286264.pdfIn PDF document text
  • http://bukharaatlanta.com/sites/default/files/file/vexopewo.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088586782a27---50620168333.pdfIn PDF document text
  • https://clumba-indoor.ru/files/files/zodik.pdfIn PDF document text
  • https://evrenmentese.com/upload/ckfinder/files/rumadoxedezazogez.pdfIn PDF document text
  • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f23c68ec1---rudufupogi.pdfIn PDF document text
  • http://fecoil.com/userfiles/file/kiter.pdfIn PDF document text
  • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e40422cf31---42097646134.pdfIn PDF document text
  • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/m295p6k3e3sbe621sb73e1j1b2/jonegeradokidu.pdfIn PDF document text
  • http://sierrahighalumni.com/clients/878712/File/48961014588.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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