PDF malware analysis — malicious · 7ce08d137bb0a5a2

MALICIOUS

PDF

3.9 KB

MD5: d5756fff80e4ac60184004f431556f5f SHA-1: d5696c9c15b95548f6e7c42bd4354d41e3565674 SHA-256: 7ce08d137bb0a5a26a56bebed88d60f45a216e57bc93e7c0c9c6e6acdbfd6a54

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

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_obj0038_000.js', is likely responsible for executing the malicious payload. Due to the obfuscation, the exact nature of the payload could not be determined, leading to a slightly reduced confidence score.

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_obj0038_000.js` `40ec8d77dbb3310342f588211c28ee5526e3decd0021ee2886de816439c09da3`	pdf-javascript-stream	PDF /JS object 38 at offset 0xA	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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