PDF malware analysis — malicious · a7ae97edaa1bdcab

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: 2ff940465337301b14b5196a20a24131 SHA-1: f5edbf395df1cc0d48c5a5f34300d7252135fafa SHA-256: a7ae97edaa1bdcab49b23362cec6ee732b79f6f3d5264ba735e1e76b4926920b

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_UNESCAPE suggests that the JavaScript is obfuscated and likely designed to execute arbitrary code. This script, named 'javascript_obj0021_000.js', is the primary indicator of malicious activity. The script's purpose is inferred to be the download and execution of a second-stage payload, a common technique for initial access.

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` `fb0e49053f2a4134935c4e5fcf56c9505a16f0a0a506b9a7da89cf0d45bf6279`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	4995 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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