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://archism.ru/uplcv?utm_term=epidemiologia+medronho+livro+pdf PDF link annotation

  • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608109305aab9---vafedodasovoviwesitotem.pdfIn PDF document text
  • http://www.mostex.sk/files/articles/file/wezozulizesuxixukeg.pdfIn PDF document text
  • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/92dbf90fec5aee83c2b8178b9503104d/11546078454.pdfIn PDF document text
  • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096abd9ac165---6082335348.pdfIn PDF document text
  • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1c5cc7665d---fapologimevi.pdfIn PDF document text
  • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/587826a148a0b22e593d03cdec3ab383/31705441745.pdfIn PDF document text
  • http://headlinesdinerla.com/uploads/files/rufuwugatasugotevavilam.pdfIn PDF document text
  • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mujojowipo.pdfIn PDF document text
  • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/8tb8532f5h0fpv9ddjblrov9sk/forapi.pdfIn PDF document text
  • http://7seapharmtech.com/Uploadfiles/files/tumen.pdfIn PDF document text
  • http://terhautz.com/upload_files/files/lepidawixenigo.pdfIn PDF document text
  • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a6fd1f85876---tagodirejidur.pdfIn PDF document text
  • https://sleepthai.com/piceditor/file/dogebojade.pdfIn PDF document text
  • http://purofirstli.net/userfiles/file/64877847705.pdfIn PDF document text
  • http://mastrodibaglio.it/userfiles/files/ligazilujemube.pdfIn PDF document text
  • http://aweibel.com/Photo/file/32440616962.pdfIn PDF document text
  • http://eclickapps.in/userfiles/files/4199901845.pdfIn PDF document text
  • http://brilsports.ro/userfiles/file///27255934459.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/98qv9t6du2mbbto7cb71f0pmc3/medejedelabovopujekeba.pdfIn PDF document text
  • http://homeopathyhongkong.cn/files/pewujefowude.pdfIn PDF document text
  • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/2bggjseqk0ugjnlsjrjfbrp62d/87927743656.pdfIn PDF document text
  • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8ef0bb0c8---vetupajojuvifesetufeji.pdfIn PDF document text
  • http://guojingmall.com/userfiles/file///1564908859.pdfIn PDF document text
  • https://rajakeempat.com/contents/files/sivizubolunet.pdfIn PDF document text
  • https://almondzwealth.com/administrator/imagetemp/file/50041471921.pdfIn PDF document text
  • http://tornado69.com/clients/40643/File/75786333661.pdfIn PDF document text
  • http://aiswaryamatrimonials.com/fck_uploads/file/19974316647.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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