PDF malware analysis — malicious · a2d1f75fff8517bb

MALICIOUS

PDF

5.5 KB

MD5: 329a9bdb0fddd7fecea799f5f396f75b SHA-1: cabf5d6f3227db8520dd04c5eaa727c43c459e95 SHA-256: a2d1f75fff8517bb537f78671f17f060ba2688c6638b3f200e132550bab05e9c

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains an embedded JavaScript payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the presence of 'stream_000_off0000069c.js'. The ML classifier strongly flags this PDF as malicious. The JavaScript is likely intended to download and execute a second-stage payload, contributing to the overall malicious nature of the document.

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` `e85ea34128823472b2809e6d7acb8ffee491dcd93f149b96baaae79974741014`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x69C	14792 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 long base64-like blob(s).

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