PDF malware analysis — malicious · 59a8fd88dfce8da2

MALICIOUS

PDF

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

MD5: 5b6772d37655255fbf4928f0e2330ab4 SHA-1: 00e82b2739f85c6ed737716a9337f15642f89cf5 SHA-256: 59a8fd88dfce8da212292b080cba752d8c0102ad1aa83b37d76615979f9d1ae0

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and PDF_UNESCAPE. The presence of `eval()` and `unescape()` calls within the JavaScript stream suggests code obfuscation and dynamic execution. The extracted artifact `javascript_obj0014_000.js` is likely responsible for downloading and executing a second-stage payload. The confidence is moderate due to the obfuscated nature of the script, preventing a definitive analysis of its exact actions.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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_obj0014_000.js` `73f47353cf06227868ef89b09d1acb1eef7c3f7cfa109efdcf8b40a15521baaf`	pdf-javascript-stream	PDF /JS object 14 at offset 0x38E	76290 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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