PDF malware analysis — malicious · de4354757738b485

MALICIOUS

PDF

27.7 KB

MD5: 50801200f9c54812784c9612cd481741 SHA-1: 358e62ba3666a7442fb002784f4a93020c168198 SHA-256: de4354757738b4853df2e457a8f6070c490ba002a0cde9f27b9405bd0ee55569

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics. The ClamAV detection indicates the presence of 'Win.Trojan.Agent-36100', a known malware. The obfuscated JavaScript is likely responsible for downloading and executing this malicious payload, making it a downloader or droppper.

Heuristics 4

ClamAV: Win.Trojan.Agent-36100 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36100
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `ee3f38a48169868e1e3ce2589c4f2cb21e63731063881d8f82e5f3042533e5a6`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	27621 bytes
Detection ClamAV: Win.Trojan.Agent-36100 Obfuscation or payload: unlikely
`legacy_pdfkit_stage_000.js` `5a93554a62e895aa8c2f774d44db1911f19124b3422cfbe0a292f5a497d05686`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x1E7	15189 bytes

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