PDF malware analysis — malicious · fc4b89e46e64a04e

MALICIOUS

PDF

5.3 KB Created: 2012-06-11 17:19:01 Authoring application: gG6D

MD5: a192b2eeec2b93a0ae73b1631919b71b SHA-1: 0354131bb1acf46463962af0fdde07d124723057 SHA-256: fc4b89e46e64a04ec78930df772a2390a7ee12a5e0214b1be578cbd3ba85197a

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The file is a PDF that contains an embedded JavaScript payload, identified by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The 'CVE_2010_0188' heuristic indicates that the sample exploits a known vulnerability in Adobe Reader related to LibTIFF and XFA forms. The embedded JavaScript is likely responsible for executing the exploit and downloading a second-stage payload. The extracted JavaScript file 'stream_002_off0000031d.js' is a strong indicator of malicious intent.

Heuristics 6

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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_002_off0000031d.js` `3bfa5b563b964b40921348fbc1d21320e7d12d70a2f277637dceb39028e5c386`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31D	83703 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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