PDF malware analysis — malicious · 3b96e647856a23f6

MALICIOUS

PDF

374.3 KB

MD5: 51dd4bd23db55d0aa4412e7f20da68a2 SHA-1: 30a7dfbca84eaf828ea7272883afcec3da59383a SHA-256: 3b96e647856a23f66c3e495dd85f3d998065d2770fc73932f0ed17474a36471d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript and utilizes ASCIIHexDecode filters, indicating an attempt to obfuscate malicious code. ClamAV detections confirm the presence of a known PDF exploit (Pdf.Exploit.Agent-36175). The embedded JavaScript is likely responsible for executing the exploit, leading to a malicious outcome.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36175 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36175
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.
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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_obj0008_000.js` `517837795a6935fe693142caec5116e8f06dd77854fac331040e914cd34babd6`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	127502 bytes
Detection ClamAV: Pdf.Exploit.Agent-36175 Obfuscation or payload: unlikely

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