PDF malware analysis — malicious · 9e228856a67f9024

MALICIOUS

PDF

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

MD5: cda4d2276084c9c8feb4c07efce82d5c SHA-1: 6b299556b50835b4e22834dd4bb48ffd444cee1f SHA-256: 9e228856a67f9024a2e17e08f3e5e1a336fe453facad96f733bf2a7064ffab17

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_UNESCAPE firings suggests that the JavaScript is obfuscated and uses potentially malicious functions like eval() and unescape(). This pattern is commonly used to download and execute a second-stage payload. No specific family could be identified due to the obfuscation.

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` `c5fc360c3e211e861dbb18db63b99cf001f750c8fae4026963021acd1da9c03e`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	4923 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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