Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d13fa6f8958bbcf…

MALICIOUS

PDF

63.1 KB
MD5: 29dca6031918b80da05ac784a1548abf SHA-1: 44247bf84a9e25687ea398f8f65403e97b2c9a33 SHA-256: 4d13fa6f8958bbcf3d4299c4491d4e5adcaa8fdc2c0ac71ff9b991617d908b34
198 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. The heuristic firings indicate an embedded script payload within an XFA form, which is characteristic of exploit delivery. The embedded file and ClamAV detection further confirm its malicious nature. The document body appears to be malformed or obfuscated, providing no clear user-facing lure.

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
70b8563a52fc9ca3b18f636f5be98f2271ef22b25969795bc797509d34f43a68		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 63835 bytes

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