PDF malware analysis — malicious · fccb0b799eba854b

MALICIOUS

PDF

18.6 KB

MD5: 33da26089ffeedab6324887ed2784ca0 SHA-1: 809adb239b12bbb3f40674a0d03fd64cfe76a5cc SHA-256: fccb0b799eba854bf6cc3fbe91464cc18f78541c4b5112e116c6b32ccd1d118b

68 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by a machine learning classifier as malicious, and static analysis revealed an embedded script payload within a PDF stream. This suggests the document is designed to exploit vulnerabilities in PDF readers or trick users into executing malicious code. The embedded file 'embedded_file_obj0083.bin' is likely the payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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
`embedded_file_obj0083.bin` `0325030a9c38fc68ee6cc33328e452312c5fd2440c98ec29db94b220646144d0`	pdf-embedded-file	PDF EmbeddedFile object 83 at offset 0x5C	24936 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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