PDF malware analysis — malicious · cb3ceb5bb9027c8b

MALICIOUS

PDF

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

MD5: 8099cd9da2b3fa4b42c025eca80ca59a SHA-1: 4c3366843ffebff38dacbd1cbc5ca4aed1b22642 SHA-256: cb3ceb5bb9027c8ba33bbf34b147c1240c01c1d14f8f5d6b7adf4f2461fc9e8b

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and PDF_UNESCAPE. The `eval()` and `unescape()` calls within the JavaScript stream suggest obfuscated code execution. The extracted artifact `javascript_obj0014_000.js` is a large, encoded blob, further supporting the likelihood that it downloads and executes a second-stage payload. The authoring application and creation date do not provide specific threat actor attribution.

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_obj0014_000.js` `7b70dc12dd45ce13092094feb46dd9e9bd024b04ba486d483cfca84b70c008e8`	pdf-javascript-stream	PDF /JS object 14 at offset 0x38D	62164 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).

Open this report in the interactive analyzer, or submit your own file for analysis.