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://cructi.ru/uplcv?utm_term=low+calorie+breakfast+without+eggs PDF link annotation

  • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16089a161df011---9652779755.pdfIn PDF document text
  • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/kmr4o8psi2ngq7s9np5e1et669/313216334.pdfIn PDF document text
  • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/bt5sdac9redpab47urfghiog9s/14562041849.pdfIn PDF document text
  • https://transpack-krumbach.de/_upload_bilder/_filemanager/file/didatebuz.pdfIn PDF document text
  • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160820f2351612---91865970481.pdfIn PDF document text
  • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160baaef6ad3fb---75070214343.pdfIn PDF document text
  • https://aawyx.com/sites/default/imageuser/file/zubotugebakixobivazipil.pdfIn PDF document text
  • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a62ec95658b---14990233812.pdfIn PDF document text
  • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b9dd379ebe2---badoropulaja.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072bc79d1ef3---98933071691.pdfIn PDF document text
  • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/02892beeafe8e5496f94d92226f972ec/duzisimawibijabekogusi.pdfIn PDF document text
  • http://nuraski.pl/wsg/userfiles/39628950983.pdfIn PDF document text
  • http://p-itos.net/admin/userfile/image/file/72205799434.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/60781665792.pdfIn PDF document text
  • http://dailycan.com/userfiles/files/gerixoxugakifovizetenonap.pdfIn PDF document text
  • http://abnicum.com/files/file/gajapovoweg.pdfIn PDF document text
  • http://bitite.lv/media/txt/122/file/34886568965.pdfIn PDF document text
  • http://fincasotilloviejo.es/files/sotillo/_repo/file/36683238169.pdfIn PDF document text
  • http://honda-vo.com/upload/file/savadadumojokoka.pdfIn PDF document text
  • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/65d0493152b27437f5546596e2e0f1cb/35879301334.pdfIn PDF document text
  • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/15d1f88806bc5a41dd1c487948060849/vusiwes.pdfIn PDF document text
  • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/b361adb2cca707807ba33bf97587741f/59411514873.pdfIn PDF document text
  • http://piotrkowska77.pl/zdjeciafile/30476072810.pdfIn PDF document text
  • http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/79632711529.pdfIn PDF document text
  • https://mariellatriolo.it/public/file/vosona.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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