PDF malware analysis — malicious · 972b04f30e69d1c2

MALICIOUS

PDF

3.5 KB

MD5: 0b86ce168d6d1e555bb507f0ea2a2986 SHA-1: 2dd846fe2e843363b84e9377ae3b1dab84e311f6 SHA-256: 972b04f30e69d1c20806ca66de678c10015a2dfb14fcfdf3ce1af3ccbccd2756

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' and the presence of a suspicious extracted JavaScript file ('javascript_obj0006_000.js') strongly suggest malicious intent. The JavaScript is likely used to download and execute a secondary payload, a common technique for initial access.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `2e1cf86abb315869c3c7fedacc3e48865c23cac56ac3b37d4d62211f644dab4e`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1B6	2269 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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