PDF malware analysis — malicious · c0cba34c765eb074

MALICIOUS

PDF

3.8 KB Authoring application: hXr (via va)

MD5: 5c8818faabc0a1e69ff95f828e25d1f7 SHA-1: e4f64b06e9ec26976dde4725a7b64131acef552d SHA-256: c0cba34c765eb0749cb1f0b11b7a8608e06b55a8824a1eb7d22ae35270637eb1

98 Risk Score

Malware Insights

The PDF file contains an embedded script payload and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of a vulnerability in Adobe Reader's LibTIFF component via XFA forms. The embedded file, 'embedded_file_obj0041.bin', likely contains the secondary payload. The attack pattern is consistent with a malicious document designed to exploit a known vulnerability for initial execution.

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` `6381212a323887c8357a76180f162d48d2e3374d3c63c0fd0b7f1eb75ce87f9c`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x53	9895 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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