PDF malware analysis — malicious · 51ec3435eca0527e

MALICIOUS

PDF

18.6 KB

MD5: 2ad81f5f768fd4451dc6d1f472b94bb5 SHA-1: 09ac352a227f08e024dd17c0dfe1f2206f6f6863 SHA-256: 51ec3435eca0527ef0296c90852edb0a21ae45fd4aa18cc7af9968beba5b91ae

70 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. This script is likely responsible for downloading and executing a secondary malicious file, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The embedded artifact 'embedded_file_obj0003.bin' is the likely target of this script.

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_obj0003.bin` `c1bfd7c5b7a7be8ee9eec9e74bd4d857cd454affe3d177cb69b4bbc690a13a73`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0x5B	24936 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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