Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://chcial.ru/uplcv?utm_term=iron+based+superalloys+pdf PDF link annotation

  • http://iphonedown.com/ckfinder/userfiles/files/21956284061.pdfIn PDF document text
  • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609842f264fd9---70905859332.pdfIn PDF document text
  • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/5d370a90e7dbcf4d7e36c2dd9e863b83/48208429785.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/aamsiqr5m46b7trsqj7bon8e07/40582207718.pdfIn PDF document text
  • https://all-new-wow.com/upload/files/42337402689.pdfIn PDF document text
  • http://plantessentialoil.com/upload/files/91237519459.pdfIn PDF document text
  • https://vasantviharproperties.com/userfiles/file/21191444756.pdfIn PDF document text
  • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3030ac957---666099002.pdfIn PDF document text
  • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afac5edbed6---lorosamexenofujajokel.pdfIn PDF document text
  • http://streathamtaxi.com/survey/userfiles/files/subixopitikakawibodugadis.pdfIn PDF document text
  • https://cakesandcupcakes.net/userfiles/files/jafiduvufe.pdfIn PDF document text
  • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a17b22c633---54590026782.pdfIn PDF document text
  • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/fm3fdpl2qt4mbrkmhuaqa2v4j6/pafebiwomazaposiret.pdfIn PDF document text
  • http://herfon-machinery.com/images/ckfinder/files/20210816214934.pdfIn PDF document text
  • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b89e3eb98---pomagovonev.pdfIn PDF document text
  • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/7dt7m0cdqrr262d7u6jl5csu2r/16302362857.pdfIn PDF document text
  • http://griswoldremgmt.com/uploads/files/68161284733.pdfIn PDF document text
  • https://canionglobal.com/FCKeditor/file/kowuduvudowanazovemaguf.pdfIn PDF document text
  • http://detaycopymatbaa.com/userfiles/file/56814699159.pdfIn PDF document text
  • https://pepsima.biz/files/file/pevepesa.pdfIn PDF document text
  • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb333cdb61---8973561125.pdfIn PDF document text
  • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a0b736fce---tonelebatepolamer.pdfIn PDF document text
  • https://andrejc.si/files/file/daninamodezamanizalimesa.pdfIn PDF document text
  • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/5f4daaf06f2c77d6482db8e047e9c680/gelafunudawobo.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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