PDF malware analysis — malicious · 734b2aa54860b0b0

MALICIOUS

PDF

10.9 KB Created: 2009-08-25 18:21:22 Authoring application: iZIvQgdsPFGkcHPakEz (via CmeAthakaUytqz)

MD5: 853027bec65b3f2434788a70d4d15d89 SHA-1: 894f1a6a4f830f17c0fe1963981f97554f4dbd5e SHA-256: 734b2aa54860b0b038489e4dcc4799565d84a16fa2dccb5a168c7b514630bc3f

208 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains embedded JavaScript that utilizes an eval() function, a common indicator of exploit code. The JavaScript is heavily obfuscated but appears to be designed to download and execute a second-stage payload. ClamAV detection confirms this is a known exploit, specifically Pdf.Exploit.Agent-35572.

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` `4588afc3353bb4a5f6da0dae06b283df3777ef0ff342395900f95aad80ab7f5c`	pdf-javascript-stream	PDF /JS object 7 at offset 0x563	9052 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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