PDF malware analysis — malicious · c48a312bbfe1672d

MALICIOUS

PDF

9.5 KB

MD5: 0405e9875db1638b290b44609463296c SHA-1: 4b9f7f5fe584ed4df78303760079cc4165fbc70a SHA-256: c48a312bbfe1672d94907f1d4ba86950ebe6190cd02e5a9847cb19b705ecd5f2

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded JavaScript payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and the presence of acroform_b64_00.js. The ML classifier strongly flagged this PDF as malicious. The embedded script is likely responsible for executing the malicious payload, potentially downloading further stages or exploiting a vulnerability within the PDF reader.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00001bed.js` `97a1523489578a2580c7d585f1ce1a28061831909f4f2790259a50356fe3358e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1BED	5445 bytes
`acroform_b64_00.js` `64e6689b3da0ee0a9cfcf4ceffd3c33241ca2413fe96dfc32f17c7db6ddf7974`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0xE9	6377 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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