PDF malware analysis — malicious · 3c0bb3e4a0a338d2

MALICIOUS

PDF

8.9 KB

MD5: 25cc800655b31440044ec9bbbfbe291b SHA-1: dc4fafc8df7f07e9bda7d9ce5987855fd397ab47 SHA-256: 3c0bb3e4a0a338d2915c508c8614b72cfb69154e3b3919441e1138d392455c67

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The `eval()` call and `String.fromCharCode` usage suggest obfuscated code execution. The embedded JavaScript file, `javascript_obj0006_000.js`, is the primary artifact. ClamAV detection as `Pdf.Exploit.Agent-36086` further confirms malicious intent. The overall attack pattern is likely an exploit delivery mechanism.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_obj0006_000.js` `28038d3f3f2d58343963ae3780e639f65e80f9a68a6d049be52868f89785ef95`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	473899 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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