PDF malware analysis — malicious · ee852e8056a57c99

MALICIOUS

PDF

5.1 KB

MD5: 8502bdfadbcbd3a23c5a8413e873b0ee SHA-1: af9cfaf27236772a375a73a939c9904a87f099b3 SHA-256: ee852e8056a57c99d0abf88f826f17fd7a655cac016e537945c8520d86f9a6ae

66 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 PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() to execute, a common technique for downloading and executing second-stage payloads. The extracted file 'javascript_obj32496_000.js' is likely the obfuscated script. The SHA256 hash of the PDF is included as an IOC.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj32496_000.js` `56418100c22d7f33dcf65424ca1046de38a8016926d769845e64f90f7a6f5c1f`	pdf-javascript-stream	PDF /JS object 32496 at offset 0x136	8382 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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