Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a8329042e0caa5…

MALICIOUS

PDF

62.3 KB Created: 2021-07-31 19:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0623007e2791aec98862e6c4436f5a18 SHA-1: e0674ab4ae58ed22bedfda5a7d4704496c890d33 SHA-256: 24a8329042e0caa5c29d7602a9acaafe5d139989bddd3142242b7cda1f922c09
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised or disposable domains, indicative of a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature. The presence of external URIs and link farm heuristics strongly suggests an attempt to lure users to external resources, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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 http://1mosref.ru/ckfinder/userfiles/files/wegokakatolatalunibo.pdf In PDF document text
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/356oop7jpie45om0el64apmpc3/71917845682.pdfIn PDF document text
    • http://airbaankhubon.com/userfiles/file/65515427569.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/c90b924b0e5dc98fc797dab8aba90334/kijezozapopunosagirixupuj.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/8091898237.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160fcb355e20f6---vudogejusuni.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/fuvefo.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/97986746548.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/146116965ece3b385ddb2bf92b79a20f/29800489567.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b370d9f1622---49565275048.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160773587576ff---77790087565.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/newixabuwavasavimup.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/faregenuj.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/8ee1adf924872260c62470478854b38c/92498657639.pdfIn PDF document text
    • http://halaljones.com/uploads/files/94350092494.pdfIn PDF document text
    • http://www.hermosabeachbungalows.com/userfiles/files/wosiwilosoriwagifu.pdfIn PDF document text
    • http://lowchens.org/userfiles/file/31393371122.pdfIn PDF document text
    • https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/5svd789prqibjp8pj1ekb912dm/81874440603.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/433a887f1757ff769aeb5ffe70a26bb8/99571257862.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/54589275087.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16075e87e9a3f6---2943300153.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/04753ee637ce8cbbf5bae1ff8d613c2e/labiwolesumazos.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16085f68c08819---45765818940.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/rubuvedimukesod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=who+is+the+richest+family+on+the+planetPDF link annotation

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