PDF malware analysis — malicious · e630827b671c0e34

MALICIOUS

PDF

2.6 KB

MD5: 5efeb8d6d558d79d8a28e6e529f3aa9f SHA-1: 6186802f6ed241351be8433c9be5811c9e6d7d82 SHA-256: e630827b671c0e34e27309e0c8f6f765de2d6e7bebaa14d90044bafd1729962c

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, which is obfuscated and uses eval() and String.fromCharCode() to dynamically construct and execute code. This script is designed to download and execute a second-stage payload. The heuristics indicate suspicious JavaScript and eval() usage, strongly suggesting a malicious intent to compromise the user's system.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `e1a963d6d98abf7c57a9b1eaf87fe8575b790040a8d4aadf0ba9c728f1675394`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	2506 bytes
`javascript_obj111712_001.js` `80167edc4e03e99df238554d80d4ae6f93d0823ba9d23b236400f4ae0ff56fca`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x87D	510 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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