PDF / .MLW malware analysis — malicious · 32df0d9c3e418516

MALICIOUS

PDF / .MLW

3.9 KB

MD5: d3a84738d1b98ec608d5f710093cc7af SHA-1: d5349dae6328ea5f7d3413f3d7ae465aa34163e0 SHA-256: 32df0d9c3e418516b3564b80894378cb670edbd69857afb36ff9512d34ca0b30

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_FROMCHARCODE. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The embedded JavaScript file, 'javascript_obj0031_000.js', is likely responsible for the malicious behavior, potentially downloading and executing a second-stage payload. The obfuscation suggests an attempt to evade detection.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0031_000.js` `9122e5d6dcabd6189964613109f4f0c92c1cbe6a7d5df097ee5c3356f44d357d`	pdf-javascript-stream	PDF /JS object 31 at offset 0x4B	16105 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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