PDF malware analysis — malicious · d44f77e3840a1dd0

MALICIOUS

PDF

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

MD5: 804c134188a616181b580ae3eb68619a SHA-1: 45d1e4160f5b19fa23d4b866f1f45ad34fe0638e SHA-256: d44f77e3840a1dd0248759a400e6e860006678751c48461eb7be46b813bbef62

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file triggered critical heuristics for JavaScript execution and was detected by ClamAV as Win.Trojan.Agent-36166. The presence of embedded JavaScript suggests an attempt to execute malicious code upon opening the PDF. While the document body is unreadable, the combination of PDF, JavaScript, and a known malware signature strongly indicates a malicious intent, likely for payload delivery or exploitation.

Heuristics 4

ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36166
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` `7c10debee58b33e02a913d0b4badb5ebdd2178ccc217774d18ae588500fa8b8f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76123 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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