PDF malware analysis — malicious · 1c65d109900f5d46

MALICIOUS

PDF

6.6 KB

MD5: 171a433c5418a793f1db31cff0dec91c SHA-1: 048a244c97f27873c4a12cfc3c4b6ec780566fbe SHA-256: 1c65d109900f5d46b64eb708fc91a4e6c99f9eaba312ea79382d4e97a448de5d

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection 'Pdf.Exploit.Agent-36086' strongly suggests a known exploit. The JavaScript is likely used to download and execute a second-stage payload, although the specific actions are obfuscated. The extracted file 'javascript_obj0006_000.js' is a suspicious artifact.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `078d17e13a26865f062760bf3e72cf1784c9673c683573ce27ffc98138e88acc`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	137519 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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