PDF / .PHP malware analysis — malicious · 0a0a8d5622838fa9

MALICIOUS

PDF / .PHP

14.8 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 7e444d9e839dd291492857c92001c958 SHA-1: cb787a6cde22e16c600db3e492ebb62361e63d86 SHA-256: 0a0a8d5622838fa9ed3160c137f7c65f9f1548fb8b5ad0ebe668a7d87b75153d

268 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains heavily obfuscated JavaScript that utilizes eval() calls, a common technique for executing malicious code. ClamAV detections and ML classifiers confirm its malicious nature, identifying it as Pdf.Exploit.Agent-36118. The JavaScript is designed to execute arbitrary code, strongly suggesting it acts as a downloader for further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

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-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0013_000.js` `3a883ca903175057335df2d299c876f27f760f54736150fe130208338245e3f8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13552 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 8 long base64-like blob(s).
`javascript_obj0013_001.js` `3ff03417688e5b9dae02127a218d58bfd2dce04219a083b92c9b784411250608`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	14258 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 8 long base64-like blob(s).

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