PDF malware analysis — malicious · c5c61ba7f8713ca7

MALICIOUS

PDF

4.2 KB

MD5: 23979782ed57329f39d4a79225a67947 SHA-1: 54ec6a681edaac1235c4856fafa9a82debd365b7 SHA-256: c5c61ba7f8713ca769ba5ba8724999d1b459af63861ae22fc2dfc28d049686ef

128 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client 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 allows for arbitrary code execution, indicating a malicious intent to compromise the user's system. The ML classifier strongly supports this assessment.

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` `db4e3e47f2bda46bed626ea4e04d26b022171a6b707b13f39d8d9354d4c62895`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12999 bytes

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