PDF malware analysis — malicious · f4fc4ee265602ae1

MALICIOUS

PDF

12.6 KB

MD5: 43a6fe3c0b9be367467c5653b329fc19 SHA-1: 92ce58c051076e7de8de2ca9338aefb129cc73b0 SHA-256: f4fc4ee265602ae1ce63fb0226d983d1e8adaf6ccb62efb8c23d0ca05d3a3179

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The file is identified as malicious by ClamAV with multiple signatures indicating a PDF exploit. Embedded JavaScript actions and streams are present, suggesting the execution of malicious code upon opening the PDF. The primary function appears to be exploiting a vulnerability to run a secondary stage, likely a downloader.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36722 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36722
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` `4e0da26486c6cac31e7e311475446823001e44483eb347ced00d1c5973d2b275`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11755 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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