PDF malware analysis — malicious · f6921c19cd184360

MALICIOUS

PDF

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

MD5: 16f6e317c574edc9c65743f7d1f7cee5 SHA-1: 2eeee18f364acd91c9c83c30a9a9bef7fa051dbf SHA-256: f6921c19cd1843609e36afa5d7305a65b56ea16fa1bafff241a90c370fab2bae

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. High-severity firings for PDF_EVAL and PDF_UNESCAPE suggest the script uses obfuscation techniques like eval() and unescape() to hide its true functionality. This obfuscated JavaScript is likely designed to download and execute a second-stage payload, a common technique for delivering malware. The presence of these obfuscation methods and JavaScript execution points towards a malicious intent, though the specific family cannot be determined from the available evidence.

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` `5e5fbc3a080a843a0a0932a5488d00a7cc6cd4604314ddaff6dcbbb257a1f06f`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	533 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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