PDF malware analysis — malicious · 30e0e9762aaefbfc

MALICIOUS

PDF

3.9 KB

MD5: 38dec8bbd665149635b0604a1b624ad1 SHA-1: e678d8acbc5186a5983201afeb5c676fa4b1ee96 SHA-256: 30e0e9762aaefbfcf7d9d7bf5b1ae30b3fb94aab8659bf7668304436385834bc

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded and obfuscated JavaScript, as indicated by multiple heuristic firings including ClamAV's detection of 'Heuristics.PDF.ObfuscatedNameObject'. The embedded JavaScript stream, named 'javascript_obj0036_000.js', is likely responsible for the malicious behavior. The obfuscated nature of the script prevents a detailed analysis of its specific actions, but it is highly probable that it attempts to download and execute a secondary payload.

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_obj0036_000.js` `36d2a93f014c87fbd658f4399e9c12404e029f55e5aa201fd3b7311fd8dafcdc`	pdf-javascript-stream	PDF /JS object 36 at offset 0xA6	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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