Malicious PDF — malware analysis report

Heuristics 9

• 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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://sarkar.ie/userfiles/file/95795664014.pdf In PDF document text

  • https://propertiproperty.com/Uploads/userfiles/files/pimoxasobafewenavetutupip.pdfIn PDF document text
  • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/jepumenoliwubitubi.pdfIn PDF document text
  • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/thgfneqg31huji3o8c21tccrf6/rumapapaxemafo.pdfIn PDF document text
  • https://art4you.sk/editor_uploads/system/files/68666483185.pdfIn PDF document text
  • http://faceconnects.com/ci/userfiles/files/kobubaz.pdfIn PDF document text
  • http://salukool.ee/upload/userfiles/file/51780991580.pdfIn PDF document text
  • http://oembag.com/uploads/files/202109070250381180.pdfIn PDF document text
  • https://hongmao.tw/uploads/files/202109042322099491.pdfIn PDF document text
  • https://fminterativa.net/cms/plugins/ckfinder/userfiles/files/59539708928.pdfIn PDF document text
  • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132121141210---zukujez.pdfIn PDF document text
  • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130372268ece---kubupup.pdfIn PDF document text
  • http://noithatphathuy.com/Images_upload/files/junobarubazufenix.pdfIn PDF document text
  • http://villaroyalenews.com/userimages/gibagunujabusunedo.pdfIn PDF document text
  • http://cuatro-pr.org/sites/default/files/file/mudowikajewukad.pdfIn PDF document text
  • http://charmingcurls.se/upload/file/15054485442.pdfIn PDF document text
  • http://nm-union.ru/ckfinder/userfiles/files/37322194404.pdfIn PDF document text
  • http://hoanggiaphatstone.com/upload/files/97573105169.pdfIn macro / runtime command snippet
  • https://martensmgt.com/business_school/uploads/file/texapono.pdfIn macro / runtime command snippet
  • http://studiorumeo.it/userfiles/files/27037102160.pdfIn PDF document text
  • http://banlinhkienlaptop.com/userfiles/file/somit.pdfIn PDF document text
  • http://relaxzenter.com/uploads/files/kaxagugero.pdfIn PDF document text
  • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/sapebo.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/vowaxaran.pdfIn PDF document text
  • http://pcserviszlin.cz/ckfinder/userfiles/files/dedazolivalatakow.pdfIn PDF document text
  • https://tigapilar.com/upload/files/nadebapiloxa.pdfIn PDF document text
  • http://daydreamspin.com/userfiles/file/41155133847.pdfIn PDF document text
  • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fcc0f77f79---69668772361.pdfIn PDF document text
  • http://nm-union.ru/ckfiIn macro / runtime command snippet
  • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=digital+clock+worksheets+grade+3PDF 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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