Malicious PDF — malware analysis report

Static analysis result for SHA-256 2245c08e8dd2b334…

MALICIOUS

PDF

4.6 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)
MD5: 867f75288240df7fe4ce3e3bf5ee7a94 SHA-1: bb0dc60b326bd3ffbb2038792d47787e9c69dd17 SHA-256: 2245c08e8dd2b3344e900da6e4ae193396ac783ecd2e29bcc2b8c6d428dd7e16
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call within the JavaScript stream (PDF_EVAL) suggests code obfuscation and execution. ClamAV detection as 'Pdf.Dropper.Agent-7238883-0' further confirms its malicious nature. The JavaScript is likely responsible for downloading and executing a second-stage payload, a common dropper behavior.

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7238883-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7238883-0
  • 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.
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
986227359551258c00212d84429931c1550e1ab0c03160224cb397ff1677a691		 pdf-javascript-stream PDF /JS object 6 at offset 0xFAC 143 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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