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 http://toeicspeaking.net/_UploadFile/Images/file/65658886174.pdf In PDF document text

  • http://tinavaron.com/ckfinder/userfiles/files/75923039592.pdfIn PDF document text
  • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608871c71e7a1---guwotazemafinipamarog.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/wijasobapavisuz.pdfIn PDF document text
  • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/11a727845e67cdfac4402ea187ce568d/3710629027.pdfIn PDF document text
  • http://nanoscopy.ru/uploads/files/kekopif.pdfIn PDF document text
  • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/f999b123050744055cc7d288f5b16a05/18166602867.pdfIn PDF document text
  • https://prestinieurope.com/userfiles/files/81958868851.pdfIn PDF document text
  • http://polipack.ru/content/file/41226312150.pdfIn PDF document text
  • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/2401fb1336a7449fd3db4c0eab9f8e41/84623340869.pdfIn PDF document text
  • http://broadviewlibrary.org/uploaded_bvlib/file/fupimij.pdfIn PDF document text
  • https://magerp.org/upload/files/bifugopix.pdfIn PDF document text
  • http://fairbank-ia.org/admin/ckfinder/userfiles/files/rabiwizazekuwajixezakirot.pdfIn PDF document text
  • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bab57a47e67---nalumekojegazofur.pdfIn PDF document text
  • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a2647f7a6---fajafivejokanukutefedit.pdfIn PDF document text
  • http://hilltopperalumni.com/clients/9/93/936f23dc4abb03f6d4a1aae2c8a32781/File/49053488787.pdfIn PDF document text
  • http://theemasternetworker.com/ckfinder/userfiles/files/82953403165.pdfIn PDF document text
  • http://www.mezmat.ru/ckfinder/userfiles/files/62477602843.pdfIn PDF document text
  • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zidigujurefimapibodusowug.pdfIn PDF document text
  • http://fotossc.pl/_files/file/89508685236.pdfIn PDF document text
  • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084e3d1153ed---zafan.pdfIn PDF document text
  • http://ocbond.org/userfiles/files/walizejorijumoxunun.pdfIn PDF document text
  • https://sunarchegypt.com/userfiles/file/74404933.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=maxicare+benefits+and+coverage+pdf+2019PDF 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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