Malicious PDF — malware analysis report

Static analysis result for SHA-256 22079a3547468f94…

MALICIOUS

PDF

53.9 KB Created: 2021-08-03 22:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 752d153bf878f1d5c8259f77d3d1d586 SHA-1: 4d1d88c656a069b0d29ae6cb3fdb884eadbb48c3 SHA-256: 22079a3547468f94f954248d9ccb607e30ec7fccaf620bd4f57a35446d62bb8f
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. Several embedded URLs point to compromised websites, including WordPress installations, suggesting a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4909

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://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/dar44s4f7ctcorfi17qdhs27gb/52608333571.pdf In PDF document text
    • http://airsoft1.ro/files/file/lisefemiwoguvelogekonavab.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/6990e029212dc46f42848147da2428ea/geleponotarusisumef.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b6478dc6435---zesiragixezopij.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/serverIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=ejercicios+de+caligrafia+para+ni%C3%B1os+para+imprimir+gratisPDF link annotation

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