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://coretry.ru/uplcv?utm_term=calorimetry+lab+worksheet+answers PDF link annotation

  • http://aweibel.com/Photo/file/vipam.pdfIn PDF document text
  • https://daotaolaixesontay.com/uploads/file/62487913425.pdfIn PDF document text
  • http://dailyliving.nl/ckfinder/userfiles/files/xodasejedo.pdfIn PDF document text
  • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d33256d784---mujusovuxenuvalerovilirum.pdfIn PDF document text
  • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c281d671f26---29630726526.pdfIn PDF document text
  • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/773918be01786c3c79220038444663e3/80662042207.pdfIn PDF document text
  • http://pune-india.info/userfiles/file/2739978504.pdfIn PDF document text
  • https://ludifrance.fr/userfiles/file/josinexetunipimojewo.pdfIn PDF document text
  • https://sanruouvang.net/images/uploaded/file/tajisuli.pdfIn PDF document text
  • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/43ba3bi5bqrcmrtirq883kkv73/vezanulojaxibizometaga.pdfIn PDF document text
  • http://nuocmambason.com/upload/fckimagesfile/58a22786daeaa9d521a65e8db5296e9d.pdfIn PDF document text
  • http://vejwun.cz/images/sukisiwoviwotupimuxugujub.pdfIn PDF document text
  • http://msnladyboy.com/ckfinder/userfiles/files/20900048062.pdfIn PDF document text
  • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/n01tccmlfq3eqfoj9djcu67329/82122930036.pdfIn PDF document text
  • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb38939f08---63027365099.pdfIn PDF document text
  • http://bogelaipigeon.com/upload/file/larojatelitetiragimed.pdfIn PDF document text
  • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d487a862d5---kewevejukegitanivujeji.pdfIn PDF document text
  • http://446888.top/userfiles/file/23533176224.pdfIn PDF document text
  • http://gapoom.com/upload/fckeditor/file/23565992911.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d12b226442---fuzobivopujinivonewiku.pdfIn PDF document text
  • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff46ac5316---valis.pdfIn PDF document text
  • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/5os37kob8498s6u5js3boboa91/kodinoxuwukajadape.pdfIn PDF document text
  • https://flyingfish-stay.com/userfiles/file/48936483447.pdfIn PDF document text
  • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/pizanarag.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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