Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8e1fa0dee0bd02…

MALICIOUS

PDF

47.6 KB Created: 2021-06-12 08:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3640069df77c65a3118711ce9eb2b711 SHA-1: adace871cf2eefe807fe13b235893655e42b8b75 SHA-256: 8e8e1fa0dee0bd02ec87f5e93f135b28ce71307fe35020f10f8c98af1b94f19e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites and disposable hosting, many of which are disguised as PDF files themselves. The primary lure appears to be 'idm crack serial key', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7248

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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=idm+crack+serial+key PDF link annotation
    • http://zwickerfoto.hu/_user/file/85677996818.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160beef0727047---vuxotosi.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608d98f0f1370---88960383389.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f775063755---73737031576.pdfIn PDF document text
    • http://xiaohecollege.com/d/files/gegib.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/2ce2d09608f5d1f4640ea31fbfd6d2f9/70495940319.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/kekioa0kbhlo8gb29h708q0dis/20037000159.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0d29cb34c---kukexavobagumezovof.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/c5adb8b492f240c593cf4297dd720447/37385422385.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160888464362fa---89822855539.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087cb7ab8c74---soriluxu.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/japamoburilolosi.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/21654333291.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab097b7ce1a---nodomune.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbc874a86e---70060241751.pdfIn PDF document text
    • https://menlopark.com/wysiwygfiles/file/27615223688.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a25434d0---kogebu.pdfIn PDF document text

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