PDF malware analysis — malicious · c4491feffa87e5ad

MALICIOUS

PDF

9.3 KB Created: 2010-05-10 20:50:50 Authoring application: otSP2m0Yi (via uyhlOb)

MD5: 0b21e1febc3735b49f38e61bbe149045 SHA-1: 8b2946e186520c98ed851e3cdd420331394f0b54 SHA-256: c4491feffa87e5adab0ced4dc7664814aad1e4c2a384ed72c424860baade3bb4

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The ML classifier strongly flagged it as malicious. The embedded JavaScript, named 'javascript_obj0007_000.js', is likely responsible for executing malicious code. The exact intent of the script is unclear due to potential obfuscation, but its presence and the high ML score suggest it's designed to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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_obj0007_000.js` `cbf18325b45bc361f633ff50342c714b82679e1e819ee6ffc721a90a2be34ae9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x239	8098 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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