Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea45d2ca78da43d…

MALICIOUS

PDF

57.5 KB Created: 2021-08-19 19:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: df50731b9a3acbc1a673d7e55925d264 SHA-1: 0942838205d0ab3680cdf5cb4320449c52c45fa7 SHA-256: 0ea45d2ca78da43da074324de3bf792c5d0ddeb0bddfbf4e1493ef13861171cd
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a critical heuristic. It contains multiple embedded URLs, several of which point to compromised WordPress sites hosting PDF files. These URLs are likely used to redirect users to phishing sites or download further malicious content. No scripts were extracted, but the presence of compromised CMS upload links suggests a pattern of using vulnerable web infrastructure for distribution.

Machine Learning

  • Nyx PDF Classifier clean score 0.2453

Heuristics 4

  • 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.
  • 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://crewmak.ru/uplcv?utm_term=spider+man+into+the+spider+verse+japanese+dub+full+movie PDF link annotation
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/k5nin0643lj71s15ebtgvea8vc/25633457002.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/362e1afc9906bff502cde9cd45d836d2/fopukafovapumuv.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1611196d755631---zavomiwir.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/30261145271.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/nfnlkkkd3vjbljvvsonbuk02l4/nivafidurano.pdfIn PDF document text
    • https://brakos.iIn PDF document text

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