PDF malware analysis — malicious · ec4a32d895e7de34

MALICIOUS

PDF

6.1 KB

MD5: 0977367e9be6fbdd07842e85df184395 SHA-1: cfe4935c1859396e92b14daa220d92554c845e40 SHA-256: ec4a32d895e7de34aeafdac99f7db5a38c26e70dc99b1740db1c1137238113f2

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The presence of an eval() call within the JavaScript stream (PDF_EVAL) strongly suggests code execution. The ML classifier also confirms the malicious nature of the PDF. The extracted artifact 'javascript_obj0009_000.js' is highly suspicious and likely contains obfuscated code intended 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_obj0009_000.js` `64901ac735a0b864e86b34d7cccf2575659651673e53556363ad93d5f9f6c2ea`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	114927 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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