Malicious PDF — malware analysis report

Static analysis result for SHA-256 2059d23e905a42ac…

MALICIOUS

PDF

788.0 KB First seen: 2026-05-04
MD5: 6945e1fbef586468a6d4f0c4f184af8b SHA-1: f527933a9f43689715c81e0436865ac22c2b07b3 SHA-256: 2059d23e905a42ac4219c02c2a59cb7b10401646da608c20914656980d6033be
156 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF that contains embedded JavaScript, which is often used to obfuscate malicious activity. Heuristics indicate the PDF is encrypted and uses an OpenAction to trigger the JavaScript, hiding the payload from static analysis. ClamAV detection as Pdf.Dropper.Agent-7145608-0 strongly suggests its role as a dropper for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Dropper.Agent-7145608-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7145608-0
  • Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS
    PDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://ns.adobe.com/xdp/ In PDF document text
    • http://www.xfa.org/schema/xci/3.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.8/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off0006d7f3.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6D7F3 289498 bytes
SHA-256: dcefc16710d335e69f60cdd8a0e174d43939d02eaa8dd4c6d7ce4ca63f06495b

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