PDF malware analysis — malicious · da3098f6b55e5f82

MALICIOUS

PDF

5.1 KB

MD5: bac1bc9726da8024e77a925a859080ed SHA-1: 2c9ed56e3b217262b59e5fe84e6d5d82e9c1d60b SHA-256: da3098f6b55e5f8274a75ea24f5ffc0ce5feb24ebdc2ecd40b576413cd7ae64b

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL rule firing suggests that the JavaScript code is obfuscated and uses eval() to execute it. This pattern is commonly used to download and execute a second-stage payload. No document body text was available for analysis, and the embedded JavaScript file itself was too obfuscated to determine its exact function, leading to a moderate confidence 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. (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_obj60895_000.js` `a372fb3e1589ce949a90cd47ef5ba709ce8c48b6eb9e40f96775e64ef685cdb5`	pdf-javascript-stream	PDF /JS object 60895 at offset 0x136	8382 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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