Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aaa98035ab26496…

MALICIOUS

PDF

54.0 KB Created: 2021-09-01 10:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a89f5c3e5e4bcb8fffb594b6422e5833 SHA-1: 7810dc9b8aeef6db3e725b898d9c5abb26099a19 SHA-256: 3aaa98035ab264961728399f311d649a558f3f73a8c1c89dc352d74d29c5c0be
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, several of which point to compromised WordPress sites hosting further PDF files. The ML classifier and ClamAV detection indicate malicious intent, likely to deliver a phishing or malware payload. Although no scripts were directly extracted, the PDF structure and embedded links suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5814

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 http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/juwomusewetinesineni.pdf In PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/pcql2qq647e54agl9ncktl3jd8/wuvofoveravurukij.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608282cbe6f32---kigez.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/bomikavodubodidegezide.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d7cd24ff2---84020018701.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16084d47d93fa3---56136464100.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=gold%27s+gym+xr+55+weight+chartPDF link annotation

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