PDF malware analysis — malicious · 3463f43ed99f3af7

MALICIOUS

PDF

18.6 KB

MD5: c298c747f1c4bdcc1542f0204597d6dd SHA-1: ad4f4f677f9a474e98364695c9d9b72f6c9cadde SHA-256: 3463f43ed99f3af741f9a5360ced436aec9f812663bb35b62de1c9b7de695f52

68 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by a machine learning classifier as malicious with a high probability. Static analysis revealed an embedded script payload within a PDF stream, which is a common technique for delivering secondary malware. The embedded artifact 'embedded_file_obj0069.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_obj0069.bin` `f29b08ead250d40008e0a07f830416c1bc094e15fcafc7bdabc8c51f61a40087`	pdf-embedded-file	PDF EmbeddedFile object 69 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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