PDF malware analysis — malicious · ff51ab7c55c1ad7b

MALICIOUS

PDF

132.6 KB

MD5: aad7d6de731306937ed914ce9845c5a9 SHA-1: dbc384ba6acfcf79cd55ff8b76c7442800572860 SHA-256: ff51ab7c55c1ad7b22f05a93d825b6b4a214c70a9e48b4fe4bc7786dbf05bef3

166 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36388'. It contains embedded JavaScript, which is often used to exploit vulnerabilities within the PDF reader. The embedded JavaScript itself was detected by ClamAV as 'Js.Exploit.HTML-27', indicating it likely attempts to exploit a known vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36388 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36388
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` `2c80b6869083988d65ba519f2050100021d8b84ea8ff206013de665f1899881b`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2C2	119440 bytes
Detection ClamAV: Js.Exploit.HTML-27 Obfuscation or payload: unlikely

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