PDF malware analysis — malicious · 8e03b25c86c04074

MALICIOUS

PDF

2.8 KB

MD5: 936cc54b29490f4ddf61a32e32be681b SHA-1: 63015fb2e354fdb8a44643759346950f8f05fd30 SHA-256: 8e03b25c86c040748aab31687b0d22e7d63ff61461c73cdc848838f54a486a97

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution: JavaScript T1566.002 Phishing: Spearphishing Attachment

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_UNESCAPE'. ClamAV also flagged it as 'Heuristics.PDF.ObfuscatedNameObject'. The embedded JavaScript file, 'javascript_obj0006_000.js', is likely responsible for executing malicious actions, potentially downloading a second-stage payload. The document body is unreadable, but the presence of obfuscated JavaScript strongly suggests a malicious intent, likely phishing or exploitation.

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` `b77106198b81cb2211a2ab8c52d2904ae4ec2c23f8c9ba8eb1ad658a006847e3`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A4	1638 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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