PDF malware analysis — malicious · cd17162c59afa257

MALICIOUS

PDF

9.5 KB Created: 2009-03-30 23:22:57 Authoring application: ugrWaCwoiLWunnGc (via dlsKRcCcjcTrsTG)

MD5: 334a732f5d026b20eb24b860b3723833 SHA-1: ed37e03fa21f7d4f44daa774722dfa811e4bc297 SHA-256: cd17162c59afa257a1f944ebef1f5abdaa77859b50679fb0c24aeeaa964c98ba

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, as indicated by multiple heuristic firings and the presence of an embedded JS stream. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically targeting PDF vulnerabilities. The embedded JavaScript file, 'javascript_obj0007_000.js', is the primary artifact, likely responsible for downloading and executing a secondary payload. The document body text appears to be obfuscated or irrelevant filler.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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` `bf388725bd0324f15c73a9b328bd95a853381e4046d3c1a461f2c77e9001881a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4D9	7709 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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