PDF malware analysis — malicious · 20709a5023457007

MALICIOUS

PDF

7.2 KB Created: 2012-03-15 14:40:03

MD5: c8fd44bf9407083519f799507fa4d3e5 SHA-1: e17ca4859ec55e47bfc9446a17fb040b2e8852df SHA-256: 20709a50234570070c2404f83b37ac1adfd345029cc7c52bc75e6b32df6dd24d

68 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains an embedded file and an embedded script payload, strongly indicating an attempt to deliver malware. The ML classifier flagged this PDF with high confidence. The embedded script is likely responsible for executing the payload, though its exact function is obscured by the PDF structure. The document body text appears to be unrelated filler content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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_obj0006.bin` `40bb4c01591a6c3040a3b1f5a8ec3204d43c846694de8ffd213f0447d3e3ca4e`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xA8C	6986 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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