PDF malware analysis — malicious · 6aba97e37606b3ea

MALICIOUS

PDF

7.5 KB

MD5: e9f9831d09b1fb6785693cf2b20e6e79 SHA-1: 1962a093122b3cfb86738581dcc57c624b28ab9b SHA-256: 6aba97e37606b3eaee4f7fc3d18c24f35d29a283a452ec3b77f9f6b3d2db635e

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript that is heavily obfuscated but contains calls to eval(), indicating it is designed to execute arbitrary code. The script's structure and the presence of PDF-specific exploit heuristics strongly suggest it is a downloader for a second-stage payload. The obfuscated JavaScript is too complex to fully deobfuscate and determine its exact actions, but its intent is clearly malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
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` `14540baf8945cddecb56a904e0b7d4a85abf112852f9b278c65e8ecd62b39486`	pdf-javascript-stream	PDF /JS object 9 at offset 0x8A	25439 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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