PDF malware analysis — malicious · 03b78a6ff8e268a9

MALICIOUS

PDF

9.1 KB Created: 2010-04-21 07:19:26 Authoring application: WJTArngMFCqzjQFvLi (via JxISxhnxbUsw)

MD5: 770dc29eedb5410ec64da4e7105bb156 SHA-1: f150d1ce6f7379c1ed436cd3d5e7e13f9b69d4b7 SHA-256: 03b78a6ff8e268a9a94de247925af7e23a9364c6f2d8b3233fec326a9ba04a52

208 Risk Score

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.
ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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` `8f748c74d4204235b964447c1d14fe26917c05b319e3fc4a6749093397f3fb23`	pdf-javascript-stream	PDF /JS object 7 at offset 0x49B	7384 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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