PDF malware analysis — malicious · 47e0b3dc42543d56

MALICIOUS

PDF

9.0 KB Created: 2009-05-13 08:45:36 Authoring application: DIJpiTxwvfsQUlXvazlj (via CMkYGqSWtIabcAmwhf)

MD5: 4c9b9f9cb29a7b343db949769f4858ac SHA-1: 8f079e606ca23d4bcd6e6724261043c71f2030ac SHA-256: 47e0b3dc42543d5653af915c786c1ea9ccc42631d82d9f8715c8ce778b86345f

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-35572' strongly suggests this is a known exploit. The embedded JavaScript, named 'javascript_obj0007_000.js', is likely responsible for the malicious behavior, potentially downloading and executing a second-stage payload. The use of String.fromCharCode in the script further suggests obfuscation techniques common in malware.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
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_obj0007_000.js` `87afbc2588e84b880603e514d8f25b58388cad74a9051e005ff19c242aeb7b7e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x41C	7415 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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