Malicious PDF — malware analysis report

Static analysis result for SHA-256 305645b1286d0ff2…

MALICIOUS

PDF

100.0 KB
MD5: 9515830c844145ed5b9b74cfb2853d89 SHA-1: a9cbb4a9ec2ddb1f56105ed628f899c11fef34e2 SHA-256: 305645b1286d0ff2720eef23d1eeecac89b3fbadcf3416b5b77a051e9c4c7074
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, which is known to be used for delivering malware. The heuristic firings indicate an XFA form with an embedded script payload, suggesting the document is designed to execute malicious code upon opening. The embedded script likely attempts to download and execute a secondary payload, although the exact script content is truncated and obfuscated.

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.
  • 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.
  • 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
35f01ba827cef74b332bd04c2f1beda35213aa06378bed2c69001874835fe73a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101620 bytes

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