PDF malware analysis — malicious · 88c592bf28c7c02c

MALICIOUS

PDF

6.9 KB

MD5: 44a4fa60e7d6bca83b1aaaed6de101c4 SHA-1: 91d955e66d53a25f21ece8f9ba105b4a43e5e4f9 SHA-256: 88c592bf28c7c02c1abb55a7286f7df8ee3227c66502a3ce431c87bae6d6ae89

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript/TypeScript

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_UNESCAPE suggests the JavaScript is obfuscated and likely intended to execute malicious code. The extracted JavaScript file, javascript_obj0007_000.js, is the primary artifact. The script's purpose is to download and execute a second-stage payload, though the exact mechanism is obscured by the obfuscation.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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` `49c4b004703e52951afc23fa1c86cd6a0745af7fe07be5e3fc38c3e454b835c1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	6142 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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