PDF malware analysis — malicious · dd51cb146e15b51c

MALICIOUS

PDF

2.7 KB Created: 275 Authoring application: 9999

MD5: dd0375678df1a4f2f5ddb131af4da7fd SHA-1: e99e5997417eb332f4a22d17bd0c0cae4aa1e735 SHA-256: dd51cb146e15b51ca9ce44c11c6dd74330357695199ca91e4799e51d3626d576

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. Heuristics indicate the presence of embedded JavaScript, which is further confirmed by the extraction of a JavaScript file. This JavaScript is likely responsible for executing an exploit, as suggested by the 'Suspicious extracted artifact' heuristic which noted obfuscation. The primary IOC is the extracted JavaScript file itself, which is the likely vector for the malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
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_obj0013_001.js` `d21d7854af9d6358c26ac608221b9a915c8d03ce3acacd109ae87555f6f87c35`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4782 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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