PDF malware analysis — malicious · d5be26f5feb5b60b

MALICIOUS

PDF

14.4 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 38cd3d25f5be4fef785708e92de3c4d1 SHA-1: 2d5b1a374af706bd47fd7d60bbb3e7939f959407 SHA-256: d5be26f5feb5b60bdf6b61528503fbdd1531a4d46f25647e7c94969317aad9ef

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF document that contains embedded JavaScript, indicated by multiple heuristic firings. ClamAV detections for 'Pdf.Exploit.Agent-14735' and 'Win.Trojan.Agent-36166' strongly suggest malicious intent. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF viewer to initiate a malicious action, such as downloading a secondary payload.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-14735 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-14735
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_obj0007_000.js` `2f7fea75b97716af26bcffb253b6b1a5ad25e464c8052ef393105ed6319d7d45`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74716 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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