Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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 https://laborke.ru/uplcv?utm_term=i+am+looking+forward+to+join+your+company PDF link annotation

  • http://jiehuist.com/userfiles/files/91886965341.pdfIn PDF document text
  • http://www.llmhospital.com/www/js/ckfinder/userfiles/files/zamisegamevik.pdfIn PDF document text
  • http://dentali.cz/files/files/23756825457.pdfIn PDF document text
  • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a2e018128---xejexutolojopidiputireno.pdfIn PDF document text
  • https://marikakozmetika.hu/editor_up/dileb.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/wazewokezuvutadaf.pdfIn PDF document text
  • http://www.mustwalge.ee/data/content/files/35516357090.pdfIn PDF document text
  • https://kodcomputers.ro/2664/uploads/60593186532.pdfIn PDF document text
  • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1611dc7f0c1212---kibufuwatepalaloguvaxose.pdfIn PDF document text
  • https://jphotographyllc.com/userfiles/file/datuluvewixufajal.pdfIn PDF document text
  • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087139acf2f3---65918514911.pdfIn PDF document text
  • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1cefe47e23---81566350317.pdfIn PDF document text
  • https://digireg.at/upload/34902820652.pdfIn PDF document text
  • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b25debff5c2c9d5a46aa63410b3c5cb4/40752445743.pdfIn PDF document text
  • http://aptekadc.pl/userfiles/userfile/pakigenilumimumezirekaje.pdfIn PDF document text
  • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b2765232db5---45808748110.pdfIn PDF document text
  • https://cambodiadriverservice.com/userfiles/file/tapijogenodipazudirixu.pdfIn PDF document text
  • http://jun-travel.com/userfiles/file/12655543034.pdfIn PDF document text
  • https://riolospettacoli.it/filesUploads/file/3949897555.pdfIn PDF document text
  • http://tfforming.ru/d/files/46568953167.pdfIn PDF document text
  • http://www.anjhimayath.com/upload/file/6213935771.pdfIn PDF document text
  • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/cja8ig4e0rqbg1n71bhqdu7siv/magowumozawafaju.pdfIn PDF document text
  • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a595abeb12e---gepiwexedazafo.pdfIn PDF document text
  • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/74c77ecfa8ec377db658124283ecc016/nuvabiwipefavuf.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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