Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba9ff43dae60a17…

MALICIOUS

PDF

82.1 KB
MD5: de2412df14fc0a7147d7192a985c2ee6 SHA-1: af03ae468cbb0da09a690238e545e3365bf6f787 SHA-256: 8ba9ff43dae60a172a440f76fd460378b279d275ef7cf37aad2ba70443c7d0f3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 PowerShell

This PDF file is malicious, leveraging the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF XFA image processing. The heuristic firings indicate an embedded script payload within an XFA form, which is a common delivery mechanism for exploits. The embedded file and the exploit suggest the file is designed to download and execute a secondary payload, although the specific nature of that payload cannot be determined from the provided evidence. The URLs extracted are related to XFA schemas and Adobe, but their reputation is unknown or benign, providing no direct IOCs for the malicious payload.

Heuristics 7

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Dropped-93 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
aea4044bc9b55cc592b3914e62c35b29fb1c143d53f6afc47a679a44493faafe		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83344 bytes

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