PDF malware analysis — malicious · 52ca0790ea34f11d

MALICIOUS

PDF

4.8 KB

MD5: 7d9c83e6d59fee1740829a56a6b43ba7 SHA-1: bce54197f6fd1480d478951642de153e5b0316fb SHA-256: 52ca0790ea34f11da9aa77b9c6b5cdb0ef9bd539f8e232c3a49ce66ec91b6bf2

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and PDF_UNESCAPE. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further supports this. The embedded JavaScript file 'javascript_obj0006_000.js' is likely responsible for executing the malicious payload. The exact nature of the payload could not be determined due to obfuscation, but the overall pattern suggests a downloader or dropper.

Heuristics 6

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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` `d48e1dfa37e020c592597ce906b15b686793ad45aad28604b0df5e0325afdb4a`	pdf-javascript-stream	PDF /JS object 6 at offset 0x197	4156 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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