PDF malware analysis — malicious · cb61b50623ee4c75

MALICIOUS

PDF

4.1 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 12c6ceaf1224193e20d9f62e74a2b47d SHA-1: 7f5b692e7187e9d842dcdddee92c45d4733ad66a SHA-256: cb61b50623ee4c75bab2abed153b329cdaf382ff8b825112757ca14035664088

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The JavaScript stream appears to be obfuscated, as suggested by the 'Script obfuscation indicators' in the static triage. The 'eval()' call and 'String.fromCharCode' usage further point to dynamic code execution. The exact malicious actions are not clear due to obfuscation, but the presence of these indicators strongly suggests an attempt to download and execute a second-stage payload or perform other malicious activities.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_obj0013_001.js` `6d75e4729063e7d86b5ecce8236995bdd564b377536188ee1e3a67bea52ffb2f`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12615 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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