PDF malware analysis — malicious · 676816ca0c29af2a

MALICIOUS

PDF

16.0 KB

MD5: 850a97affacf352a8b827db6e529387b SHA-1: 0c04fbf960e6b0f9110c507c8c30b1b34e39a617 SHA-256: 676816ca0c29af2a0dc7c08ae00543bea6445fd5612e1424620ae0453516d1b3

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV also detected it as Pdf.Exploit.Agent-36324. The embedded JavaScript is heavily obfuscated but appears to be designed to download and execute a secondary payload, a common technique for initial compromise.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36324 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36324
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `a6a30fdc3c0cf866331e850b4ad0100590f15dadd95c412036ac3b67433a9bc0`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2D4	15465 bytes

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