PDF malware analysis — malicious · a7c1b3fc937c7a79

MALICIOUS

PDF

12.4 KB

MD5: 5525820e3893097a5f25ca36d191e003 SHA-1: 34654a0e58d1a9fcfaa9ccbef668788cf88837fe SHA-256: a7c1b3fc937c7a79a57e2eea3fe691b7a943e721dbff202e4abeb12e2b870002

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detection of Pdf.Exploit.Pdfka-9 further confirms a known exploit. The embedded JavaScript is likely designed to download and execute a secondary payload, a common technique for initial access.

Heuristics 3

ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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` `dd0b67038d232c318d32b8dafbee9a7bca06d6404da893d095a282f786bc91e7`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11634 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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