Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90586eeb7a02375…

MALICIOUS

PDF

99.7 KB
MD5: d72937083cf79ea7c6dcb70e2a067abe SHA-1: 76eb424e4d6ce2be1da9de0a72ba952011f66b67 SHA-256: d90586eeb7a0237593f9de566ab019765e97db3ee3206af17e1f1d8bda148606
138 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF XFA image parsing. This exploit is designed to execute arbitrary code, and the presence of an embedded script payload further indicates malicious intent. The script likely downloads and executes a secondary payload, although its exact function is obscured by obfuscation. The embedded file and XFA form heuristics reinforce the exploit vector.

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
dcd82936327ba0b700bdbb11ddf1503a493b46025b07d1f1008a6dfde2f2e6ae		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101351 bytes

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