PDF malware analysis — malicious · ff0f15cd561a85f5

MALICIOUS

PDF

14.5 KB

MD5: c6024fd26795e95b209df518d1a8e304 SHA-1: eef983b01cd7cf114f0da6d36ae1c838ca5e9922 SHA-256: ff0f15cd561a85f58baeaa4a301881c9a1c8e147ca8f7ab66b1018b0d95d813a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 Scripting: JavaScript

The sample is a PDF file flagged by ClamAV as Pdf.Exploit.Dropped-94 and a machine learning classifier with high confidence. It contains embedded JavaScript, including calls to eval() and String.fromCharCode, indicating obfuscated code execution. The extracted artifact 'javascript_obj0076_000.js' is likely responsible for downloading and executing a secondary payload, which is a common technique for exploit-laden PDFs.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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_obj0076_000.js` `c28effae366bd4b2a63fe29aea090a07947ae4e73aa9efc1cf87e16e006e7288`	pdf-javascript-stream	PDF /JS object 76 at offset 0x38AB	144 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.