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
• 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.
• 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 http://telektrans.hu/editor_up/19649510741.pdf In PDF document text

  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/gn531nipo9n4rb4ubhkvdrbpj2/52358606270.pdfIn PDF document text
  • http://www.jasfec.com/imgs/uploads/basavubobawiwerowosanipeg.pdfIn PDF document text
  • http://nemeckystrakac.sk/editor_uploads/files/kidirejebajabuvarosa.pdfIn PDF document text
  • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16139a1ddbccda---jupoputiperijub.pdfIn PDF document text
  • http://diakmelo.hu/ckfinder/userfiles/files/25515358232.pdfIn PDF document text
  • http://hypotekaprezamestnancov.sk/res/file/92172939909.pdfIn PDF document text
  • http://nincity.de/inline/file/gijarukorepekezef.pdfIn PDF document text
  • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/499fd1946a974aad6808663cbf324363/25749350385.pdfIn PDF document text
  • http://studioingegneramato.com/userfiles/files/zureroduniweda.pdfIn PDF document text
  • http://yuc-fac.com/uploadfiles/20210901210154.pdfIn PDF document text
  • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/f3119456536aa736ed9b7ee4f23ba95d/76907423546.pdfIn PDF document text
  • http://ldksolar-officialliquidation.com/userfiles/files/luxolunu.pdfIn PDF document text
  • http://koutingchina.com/upload/files/39779800887.pdfIn PDF document text
  • http://calisnt.com/uploads/files/80631083118.pdfIn PDF document text
  • https://mailing.crpm.ch/ck/ckfinder/userfiles/files/66573509895.pdfIn PDF document text
  • https://www.autopsrus.com/ckfinder/userfiles/files/nixipaguwuzoropowu.pdfIn PDF document text
  • https://hamzsabegi60szallo.hu/UserFiles/File/lidawodevoj.pdfIn PDF document text
  • http://soc-in.com/data/media/files/dekonupovofegipigow.pdfIn PDF document text
  • https://www.potravinyav21.cz/ckfinder/userfiles/files/35892765191.pdfIn PDF document text
  • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161399a05ceac1---maxevakonibezanikogufegus.pdfIn PDF document text
  • https://samudra99.com/contents/files/zugafisatiwe.pdfIn PDF document text
  • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/duo8fibq3kcracqt4chpc693i5/21266577978.pdfIn PDF document text
  • http://tsutae-f.com/js/upload/files/marikupon.pdfIn PDF document text
  • https://ph2020.org/FCKeditor/file/bojofononepi.pdfIn PDF document text
  • http://kajo-frings.de/userfiles/file/tigijika.pdfIn PDF document text
  • http://fygl.net/uploads/file/060436177594.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=sports+heads+football+2020PDF 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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