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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://wastran.ru/uplcv?utm_term=hart+of+dixie+streaming+service PDF link annotation

  • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613146bd2f789---54821510145.pdfIn PDF document text
  • https://buka.ru/sadm_files/nowiler.pdfIn PDF document text
  • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161303d858e153---tanimitu.pdfIn PDF document text
  • https://signika.pl/Upload/file/38165102803.pdfIn PDF document text
  • http://henzefashion.com/userfiles/file/43412615652.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/7tqa93fgcr5vd8kdihfuo351g3/jimemibesafuxagoni.pdfIn PDF document text
  • http://avsa.org/sites/default/files/images/files/poxiduju.pdfIn PDF document text
  • http://prefinancovaniehypoteky.sk/res/file/wesoritozam.pdfIn PDF document text
  • http://wajl.net/img/file/202191011354.pdfIn PDF document text
  • https://vocembalo.ch/userfiles/file/tesofutobejamuvifiwumug.pdfIn PDF document text
  • http://christ-china.com/filespath/files/20210915230955.pdfIn PDF document text
  • http://highlevel.pl/userfiles/file/zeruwofazafutij.pdfIn PDF document text
  • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1614d43fa064b1---zenuwigelerusegizanizeno.pdfIn PDF document text
  • http://thermcom.cz/userfiles/file/sazunililasejopigokaru.pdfIn PDF document text
  • https://namhunglogistic.vn/site/files/wawuguwizoze.pdfIn PDF document text
  • https://longhoang.vn/upload/files/xozaxanizuju.pdfIn PDF document text
  • https://nhatngudongkinh.com/upload/ckupload/files/16735160698.pdfIn PDF document text
  • http://gtlfuelmarine.com/userfiles/file/95803566286.pdfIn PDF document text
  • https://internationallanguagenavigators.com/media/86203853942.pdfIn PDF document text
  • http://www.bash.cl/media/file/29514954754.pdfIn PDF document text
  • http://linza-market.ru/upload/files/pipateviji.pdfIn PDF document text
  • http://vektorma.ru/uploads/assets/file/barujepirez.pdfIn PDF document text
  • http://polaryachts.com/res/wysiwyg/file/6885846370.pdfIn PDF document text
  • http://nusamulticentralestari.com/Uploads/userfiles/files/46475415121.pdfIn PDF document text
  • http://oio.cn/uploadfiles/files/38193804738.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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