PDF malware analysis — malicious · f670e8252ce1e6c5

MALICIOUS

PDF

15.4 KB

MD5: bf6e25efe30218031cb44187e82ae2c8 SHA-1: f20f637007d2df399fd763ae0f53f06f94e64bfe SHA-256: f670e8252ce1e6c5e2825f4258123aa894ed3c75d9ab2b740c9126d5e3059bbc

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file contains an embedded script payload and an embedded binary file, strongly indicating malicious intent. The ML classifier assigned a very high probability of maliciousness. The embedded script is likely designed to execute the embedded binary, which is a common technique for delivering malware. The document body text is highly obfuscated and does not provide clear user-facing content.

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` `52deb5aa5f4a2969f254e774114c15113a46bd0bef9692e1aa6f9b5765b28eeb`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	15009 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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