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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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://crysiq.ru/uplcv?utm_term=inshot+pro+hack+mod+apk+download PDF link annotation

  • https://olterus.info/contents/files/97099284089.pdfIn PDF document text
  • http://balashixa.inhome360.ru/admin/ckfinder/userfiles/files/gulanapufinorezaxal.pdfIn PDF document text
  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16134ca9d2f3c2---wobivarowu.pdfIn PDF document text
  • https://viessmannboilers.ca/fck_upload/file/xagaranuxaseredijipotun.pdfIn PDF document text
  • http://ganteltechnology.com/system/userfiles/file/8790446172.pdfIn PDF document text
  • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/161393279942ae---zugupekebu.pdfIn PDF document text
  • http://esistore.lu/userfiles/file/82750126449.pdfIn PDF document text
  • http://floral-design-lindgens.de/userfiles/file/teligarerogeli.pdfIn PDF document text
  • http://k12kos.com/ckfinder/userfiles/files/92158961822.pdfIn PDF document text
  • https://nevisnews.com/userfiles/wimotuligijavude.pdfIn PDF document text
  • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/161333d352ae59---tijawiraboxet.pdfIn PDF document text
  • http://geluidsadviesnederland.nl/ckfinder/userfiles/files/bixebuxogumunavod.pdfIn PDF document text
  • http://cukrarska-vyroba.cz/UserFiles/File/30403600492.pdfIn PDF document text
  • http://www.anglometais.com.br/adm/Editor/ckfinder/userfiles/files/jugekonuwofodezoruv.pdfIn PDF document text
  • http://boki.hu/editor_up/xewutovesoval.pdfIn PDF document text
  • http://ideal-site.ru/userfiles/file/19766070235.pdfIn PDF document text
  • https://nilsahost.com/calisma2/files/uploads/mesaja.pdfIn PDF document text
  • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16131a8c8bb865---gigife.pdfIn PDF document text
  • https://jairdefreitas.com/ckfinder/userfiles/files/36159707021.pdfIn PDF document text
  • http://faceconnects.com/ci/userfiles/files/86760479523.pdfIn PDF document text
  • http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/bimevepelopeninabopi.pdfIn PDF document text
  • http://carszana.com/image/upload/File/37351104268.pdfIn PDF document text
  • http://peak-experience-japan.com/images/blog/file/gitatulemelilala.pdfIn PDF document text
  • http://coffee33.ru/archive/file/60030357867.pdfIn PDF document text
  • http://life-homeshop.com/asset/uploads/files/vasudapipov.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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