PDF malware analysis — malicious · f639bb2cec25f5b8

MALICIOUS

PDF

3.9 KB Authoring application: rxode (via va)

MD5: 3245b873aad98044221861d7564bdfe2 SHA-1: 0acf70c1dbbd5406347e874995b32b720b058aad SHA-256: f639bb2cec25f5b81399798896d4e92647c67e4afad233ec3c879eb89f4a0a83

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1204.001 Malicious Link T1059.001 PowerShell T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

This PDF file contains an embedded XFA form that exploits the CVE-2010-0188 vulnerability in Adobe Reader. The exploit targets a LibTIFF parsing issue within XFA forms, allowing for arbitrary code execution. The embedded artifact 'embedded_file_obj0041.bin' is highly suspicious and likely contains the second-stage payload. The exploit's nature suggests an attempt to download and execute further malicious content.

Heuristics 5

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
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_obj0041.bin` `887a64c791c3cc817aaab1c3bf92fb685f88c3554f63e61434450e05d093ec57`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x53	9813 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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