Pdf.Dropper.Agent-5447520-0 — PDF malware analysis

Static analysis result for SHA-256 437bacee5dc68370…

MALICIOUS

PDF

2.8 KB
MD5: 7f1d25321865a0b70dd2364c42815502 SHA-1: 2bb379aab4fded8223c136372f1297f8df58b22b SHA-256: 437bacee5dc6837094bc7b7cf705f560f8f4312311c9d18e9a720b387e310faa
126 Risk Score

Malware Insights

Pdf.Dropper.Agent-5447520-0 · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE suggests obfuscated JavaScript code is being executed. ClamAV detection as 'Pdf.Dropper.Agent-5447520-0' confirms its malicious nature. The embedded JavaScript likely downloads and executes a second-stage payload, as suggested by the dropper classification.

Heuristics 6

  • ClamAV: Pdf.Dropper.Agent-5447520-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-5447520-0
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • JavaScript action low 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.
  • String.fromCharCode low PDF_FROMCHARCODE
    String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111611_000.js
9f9db21f35981a899ff490b680eb9df267a124974761068c2b308a2a7194f552
pdf-javascript-stream PDF /JS object 111611 at offset 0x197 259 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
javascript_obj111612_001.js
23f1847b2d132010407d5aa7eb1b2011da9cda6def6ef075a61e887b417efe5c
pdf-javascript-stream PDF /JS object 111612 at offset 0x269 3365 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).