PDF malware analysis — malicious · 1652eebd8e75e2c9

MALICIOUS

PDF

9.5 KB

MD5: 8693b543f69d564eb54d91ac9f6bff27 SHA-1: 8edbe121eaf3d6fa33ec7da8f3eccd4a2831e7c3 SHA-256: 1652eebd8e75e2c9280b4fe2db9aa488fdb4fc188dd68328816d76875a25c8f9

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, including a call to eval(), which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment. The JavaScript appears to be obfuscated and likely attempts to exploit a vulnerability to download and execute a second-stage payload, as suggested by the 'PDF JavaScript exploit cluster' heuristic.

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.Dropper.Agent-1828649 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828649
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0016_000.js` `d5c1a6aa4028c29987d8ed50634517ad956ba08f0bd7385e3bb96e559ce192cb`	pdf-javascript-stream	PDF /JS object 16 at offset 0x2046	146 bytes
`stream_006_off00002241.js` `4289b42c9fcbfe4dc4159e64fbfb9857982871902ba3c8cc599f7819f23b49e0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2241	331 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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