Pdf.Dropper.Agent-5343312-0 — PDF malware analysis

Static analysis result for SHA-256 6a6318cfca99abbd…

MALICIOUS

PDF

26.0 KB Created: 2006-02-01 14:14:12 Authoring application: Wegoptyr (via HghTc6Fs)
MD5: bcd1ae5d928d5199b4d721827d239997 SHA-1: 15da70bf847baaf7b02d5cb3805fd798c9e53f47 SHA-256: 6a6318cfca99abbdb5406745c68ff57cca2eb96e542ceed4bea59543dcfcf18a
208 Risk Score

Malware Insights

Pdf.Dropper.Agent-5343312-0 · confidence 95%

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that utilizes an eval() function, a common technique for executing obfuscated code. This JavaScript is likely responsible for downloading and executing a secondary payload, as indicated by the 'PDF_JS_EXPLOIT_CLUSTER' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection name 'Pdf.Dropper.Agent-5343312-0' further supports its role as a dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • ClamAV: Pdf.Dropper.Agent-5343312-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-5343312-0
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • 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.
  • 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_obj0007_000.js
d0e54066dcd4f340de5c4c9c8c20e3d97c6013588bacd014da560f7b128a3b31		 pdf-javascript-stream PDF /JS object 7 at offset 0x1EE 25472 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
javascript_obj0007_001.js
85a1ff116ae58915c0cf683afb8b71d400f9db374bd9a3d3054252779883ae16		 pdf-javascript-stream PDF /JS object 7 at offset 0x1EE 385 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.