PDF malware analysis — malicious · 009a0c8864ba2896

MALICIOUS

PDF

20.2 KB Created: 2009-10-08 19:48:53 Authoring application: PDF Library 1.6.10 (via PDF Library 10.4.2)

MD5: 1154ba37ce81c5afaf589213f8f48bf4 SHA-1: b78418bfeb08a7581eeb8d930374ce0fc7cff53f SHA-256: 009a0c8864ba2896e4612669c76f8c58be6a03ee6b8c6c63f1e9db9a4d9c7775

186 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript that utilizes the unescape() function, a common indicator of obfuscation and potential exploitation. The ML classifier strongly flags this as malicious. The JavaScript is likely designed to download and execute a second-stage payload, contributing to the overall malicious intent of the document.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `55ebf1c06d750a6380deee05aaeb65cc56d88381fb63df8bd74a1fde5f2751cc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	22234 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.