PDF malware analysis — malicious · ecd403147f305d66

MALICIOUS

PDF

10.7 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 4226c415fbbed632b292bdfcf1fc8c88 SHA-1: d092d35e0267098311dd0475aa817fa7f223691e SHA-256: ecd403147f305d6668a707d042042f2c0112b3315b661359d01fe622babec7f3

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation techniques, including string concatenation and eval() calls. The ClamAV detection 'Pdf.Dropper.Agent-7320678-0' strongly suggests a dropper functionality. The JavaScript is designed to execute arbitrary code, likely downloading and running a secondary payload. The presence of eval() and obfuscated JavaScript points to a malicious intent to bypass static analysis and deliver further malware.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7320678-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7320678-0
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `40d289c7e6dfa71ff7a3874d788a3c3dbcb428fea2670ee66165585d78a9c8dc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9445 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 12 long base64-like blob(s).

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