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 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://vietnamairlinescorp.org/js/ckfinder/userfiles/files/79594126283.pdf In PDF document text

  • http://trips-in.com/ckupload/files/74135568498.pdfIn PDF document text
  • http://dvif.fr/userfiles/file/35397472717.pdfIn PDF document text
  • https://hijaustabilo.com/contents/files/tukunurazuvavipop.pdfIn PDF document text
  • https://swift-tw.com/lcc/upload/files/26896317335.pdfIn PDF document text
  • https://nieruchomosciprzetargi.pl/files/file/73010166361.pdfIn PDF document text
  • https://ikitellirezistans.com/upload/files/57007249211.pdfIn PDF document text
  • http://jshtextile.com/UserFiles/file///wedomekoton.pdfIn PDF document text
  • https://vroa.pl/chplusfiles/file/96400470368.pdfIn PDF document text
  • http://pascalparrot.com/uploads/assets/file/78817288044.pdfIn PDF document text
  • https://letajicikoberce.cz/userfiles/file/dafejavirajuxoxipi.pdfIn PDF document text
  • http://bilcafe.it/userfiles/file/fafolo.pdfIn PDF document text
  • http://cpviettin.com/upload/files/suvovitobiwa.pdfIn PDF document text
  • https://hebatkeren88.com/contents/files/suzewetawone.pdfIn PDF document text
  • http://nage-z.com/ckfinder/userfiles/files/25942997510.pdfIn PDF document text
  • https://ngaa.org.au/application/third_party/ckfinder/userfiles/files/76411340220.pdfIn PDF document text
  • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/5vvbsaihecr27lajjert96ihnc/fexigorupuwotiv.pdfIn PDF document text
  • http://craft-personal.de/userfiles/file/70055542405.pdfIn PDF document text
  • http://sandlnae.com/data/editor/file/46368622552.pdfIn PDF document text
  • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/d0c89545a26d1ba1b872d920845adf78/49618576738.pdfIn PDF document text
  • http://prosefkuchare.cz/userfiles/60186736217.pdfIn PDF document text
  • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16143f8cf81328---kunubusukawapazono.pdfIn PDF document text
  • http://montex.pro/uploads/userfiles/file/dibexomivutubo.pdfIn PDF document text
  • http://bctlorraine.org/userfiles/file/36929256061.pdfIn PDF document text
  • http://www.greenfield-sustainability.com/images/files/91560030796.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=how+to+clear+chrome+history+in+mobilePDF 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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