PDF malware analysis — malicious · 827690e4a19ff37e

MALICIOUS

PDF

5.6 KB

MD5: a76807d25eeed57fbf0ee88a2a5ada8d SHA-1: 20a7fb2afe114b0649b471fa15ac16e6cca20b5d SHA-256: 827690e4a19ff37ecc89480b7cc294dc40e95a47e467460b043caf5bf66499a3

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The PDF contains an embedded script payload and an embedded file, strongly indicating malicious intent. The ML classifier also flagged this PDF with high confidence. While the specific exploit and payload are not fully discernible from the provided data, the presence of these elements suggests the document is designed to deliver a secondary malicious payload, likely through the embedded file. No specific family could be identified.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `8700093ca56a17be7a2e8d1256e81c509ab8b90e3a464b8b66fbfde59229f71a`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x78	5077 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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