PDF malware analysis — malicious · ec660c190835c2f5

MALICIOUS

PDF

3.9 KB Authoring application: hXr (via va)

MD5: 52dcfe898330f54b2d7fd9fd268090d4 SHA-1: 76c4f3c95ad3c175a1cd1f4ef07d9aa882ea16db SHA-256: ec660c190835c2f5dd2983d4e5999299a875e86f14ca8016157eb5d317b86265

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an embedded object and triggers a critical heuristic for CVE-2010-0188, indicating an exploit targeting Adobe Reader's LibTIFF component. The presence of an embedded script payload further suggests the file is designed to execute malicious code. The extracted document body is heavily obfuscated and does not provide clear user-facing content, but the technical indicators strongly point to a malicious exploit delivery mechanism.

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` `d24c169d4c64b54107dcc3a4cf3b89309430a9698bcd3176e31c85a838a29246`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x53	9968 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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