PDF malware analysis — malicious · d2d3e882219ad8a6

MALICIOUS

PDF

26.1 KB Created: 2011-72-51 03:25:00

MD5: b2b4a4f4bf2bae99c3736b357f4871ba SHA-1: 5a0082597801ce4c229509763c8f77fb67d113a9 SHA-256: d2d3e882219ad8a6170ced6c2b3d23392951ef319186e5c760351d926011eca1

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream includes an eval() call, which is a high-severity finding (PDF_EVAL), suggesting that the script is designed to execute arbitrary code. The ML classifier also strongly flagged this PDF as malicious. While the specific JavaScript content is not fully detailed, the presence of eval() and the ML score indicate a high likelihood of it downloading and executing a second-stage payload. No specific family could be identified.

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_obj0001_000.js` `77ce5f54e3989674dbede856db8c1a8c3847cbb669a75e0eee578b33ff26ac24`	pdf-javascript-stream	PDF /JS object 1 at offset 0x6410	920 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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