PDF malware analysis — malicious · 48eb21ae43721604

MALICIOUS

PDF

4.1 KB

MD5: 21fc211a004fced951345c2c728c86f8 SHA-1: d3a63adab328578606529a79897dbab191fa864a SHA-256: 48eb21ae43721604048337355083231250dc515867e105f340214d6df639b3a2

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1566.002 Phishing: Spearphishing Attachment

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to execute arbitrary code, indicating the file's malicious intent. The ML classifier strongly supports this assessment. No scripts were extracted, but the exploit itself is sufficient evidence of malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `4839a2bf1d599286f76d379f5739ed0ea4ce06834da10a215ce6349ba2d8786e`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12840 bytes

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