PDF malware analysis — malicious · 4d577612062b4b9b

MALICIOUS

PDF

5.6 KB

MD5: bddf36a13f55fc88171a0181590ca2a3 SHA-1: f93bbcde226a7eda8d82086d0b85cc39aabba371 SHA-256: 4d577612062b4b9b55e0b05451d6e3ad64fa0a2ce176eb5324f66dc3c4f20c66

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded JavaScript payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the extracted artifact 'stream_000_off0000069c.js'. The ML classifier strongly flagged this PDF as malicious. The embedded script is likely responsible for executing the malicious payload, potentially exploiting a vulnerability within the PDF reader. The document body content is not human-readable and appears to be obfuscated or malformed data.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

Heuristics 3

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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
`stream_000_off0000069c.js` `7d2a3af8471ac033049ab3bb8b4c25904346f53dcdeb4d62eaba13b637e70c00`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x69C	15128 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 long base64-like blob(s).

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