PDF malware analysis — malicious · cea3a396efb907b2

MALICIOUS

PDF

16.2 KB Created: 2010-03-11 16:19:05 Authoring application: xPL3NE9EApcJv (via LxlqJP0m)

MD5: b033f62f1f2ed926cd16bb2b29a12500 SHA-1: 6a028c257b99de3ea52031b36c44020728a8ee4c SHA-256: cea3a396efb907b2a34b58333bdccf6f3169250ddbaa1036b87c4ff044606b23

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The presence of an eval() call within the JavaScript stream is a strong indicator of code execution. While the exact payload is not directly visible due to obfuscation, the pattern suggests the script is designed to download and execute a second-stage payload. The file is classified as malicious with a high risk score.

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.
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` `9620821f103a963318a722845074b40915f772604d77d29e1d1a8021c087db33`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23C	15321 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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