PDF malware analysis — malicious · 6100b0d1b0229682

MALICIOUS

PDF

12.2 KB Created: e1svrt Authoring application: Adsfgddfobe (via sfgasdfgsd)

MD5: 5eb0932a1b9eb40d8b58a7d2fb7d1126 SHA-1: faec25fa0ca912f652f911cbc22076df531c8e5b SHA-256: 6100b0d1b0229682d77955873951e64e4cb104de8dea56f5516a44ac903de7f6

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF sample contains obfuscated JavaScript that utilizes eval() and unescape() functions, indicating an attempt to execute arbitrary code. The JavaScript is designed to download and execute a second-stage payload, likely exploiting a known PDF vulnerability. The ML classifier strongly flags this as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

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)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0015_000.js` `520c9cbd8a416fb3d3dcfca9a21f65677f3c845878c3562f5bdfd711219275ca`	pdf-javascript-stream	PDF /JS object 15 at offset 0x135	247 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0017_001.js` `80f8f7009ed3cfc0f825ebed32d9ac14cc13aaf64430528b4d198dcd81a3d6ab`	pdf-javascript-stream	PDF /JS object 17 at offset 0x2DD8	266 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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