PDF malware analysis — malicious · c99109e6f4c8a81f

MALICIOUS

PDF

5.2 KB Created: 2011-06-11 17:19:01 Authoring application: sot

MD5: 864b508b6a118efffde0da4a592bfb2d SHA-1: 61d9ed339a33deb37771d7d9dd2b37496e84e718 SHA-256: c99109e6f4c8a81fe064bb3f2d6ddee4afdb670b7552e2a750d563dcbcd70d28

100 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an embedded JavaScript payload that is triggered by the CVE-2010-0188 exploit. This exploit targets a vulnerability in Adobe Reader's handling of TIFF images within XFA forms. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact function is obscured by obfuscation. The presence of the exploit and the embedded script strongly indicate 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_off00000306.js` `7b7f674e83e92074d0de3d87249467b736f7f3ea788b56821e8f685f4f96a208`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x306	65638 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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