PDF malware analysis — malicious · d344e0c5bf2cfc59

MALICIOUS

PDF

6.6 KB

MD5: 1bfc6343a000396025b9e70a79645009 SHA-1: 50407e58f1901b1b0042ea93da1f095f9a405cf6 SHA-256: d344e0c5bf2cfc59f787018e541e5fe7af4a456302e394f3bcae580d3ebdee9b

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'CLAMAV_DETECTION' heuristic identifies it as 'Pdf.Exploit.Agent-36086', suggesting it exploits a known PDF vulnerability. The embedded JavaScript, although not directly visible in the provided output, is the likely mechanism for delivering a malicious payload, as suggested by the 'Suspicious extracted artifact' heuristic pointing to a JavaScript file. The document body is unreadable, preventing a more specific analysis of the lure.

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` `246081ae5624736078a8e748b30b22d8960265b28091e376f92e54188d9a30cb`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	137518 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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