PDF malware analysis — malicious · ec28410932b11359

MALICIOUS

PDF

10.8 KB Created: 2009-12-17 16:59:10 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 4df24a035bbdf011929f08d5df7dfd37 SHA-1: a3fb793394f01ed641e1f895471c9e1e5d2d8378 SHA-256: ec28410932b1135901461e4e37b9393fdb534d5b2a4447bec951548efe3d0ec7

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_UNESCAPE suggests the script is obfuscated and likely performs malicious actions such as downloading and executing a second-stage payload. The extracted artifact 'javascript_obj0021_000.js' is also flagged as suspicious due to script obfuscation. The overall confidence is high, but the exact nature of the payload cannot be determined without further analysis of the script's deobfuscated content.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.

Filename	Kind	Source	Size
`javascript_obj0021_000.js` `dc5746f03b9348712ee55690840f92c308d1d875e7ed9442976ef57cdec989e5`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	17876 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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