PDF malware analysis — malicious · ac90946dabc8b56a

MALICIOUS

PDF

5.1 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob

MD5: b6c19d566176f20b26fe33560713654d SHA-1: 48984314ecdc260a853d93262b0a537c22036274 SHA-256: ac90946dabc8b56a20a55b76b89bbdaa26823017b41a022caa1c1e8209f83ff6

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell T1059 Command and Scripting Interpreter

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA images. A decompressed JavaScript payload was extracted from the PDF stream, indicating the document's intent to execute malicious code. This payload likely downloads and executes a second-stage payload, contributing to the overall malicious nature of the file.

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
`stream_001_off00000324.js` `4a9e5d85b3af2f720e412aaf47f146e7b515a5fbe13958317e487d63849e04ef`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x324	50788 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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