Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c9f5dc7337081b…

MALICIOUS

PDF

52.1 KB Created: 2021-06-18 19:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 12999a1b98cca81a5cc2d7c4b15371ee SHA-1: eaf069c3480f0a5106acf08ec3cdf367f327d723 SHA-256: 09c9f5dc7337081bb4d51ec8c8f629dc4c9068c7a474ceca5760582d33e7e907
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URIs pointing to compromised WordPress upload storage and disposable hosting, suggesting it is used to distribute phishing lures or malware. The presence of multiple external links and the nature of the hosting indicate a deliberate attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8593

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://garglob.ru/uplcv?utm_term=850+sq+ft+house+images PDF link annotation
    • https://nistd.in/userfiles/file/bifatabepojopo.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/2t4n54e4vnveig10st6t71df21/27264191372.pdfIn PDF document text
    • http://apcmagon.com/userfiles/bebiruzofabubanoxo.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/sc1r86lkc4clggqc7999og79ev/jomogifilu.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761f47b5957---makeborefe.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0effd96ee---dezedatozudulivim.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077b87a5b45c---gojusupotalamovonajin.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4779c0f93---xebusirezisamosa.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/51745a25fdd2e2cae3f4d06c504756b9/puwaze.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/52d59a930cac62ee2de61bd0c6a4c179/77636183183.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798eb3e464a---zodikulifiduxagafotaxi.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/sisewekafoxowubimoxenopus.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce18ef2b53---jinevafajutimokixaxoki.pdfIn PDF document text
    • https://encoregallery.us/wp-content/plugins/super-forms/uploads/php/files/1d299a0c036f8dc7ae830b8491a1fed5/67091074073.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/24040097817.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/58881781100.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c7a2ed71b---moxisawunuzopu.pdfIn PDF document text

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