Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9322c247c84948d…

MALICIOUS

PDF

99.7 KB
MD5: 86e1881fac8532858f4c862d01c646f1 SHA-1: cd7a957baacf377df8d92837780b4c9612f0ccff SHA-256: b9322c247c84948db51dc8304744f1b2a918fda6bea3afc8a179dd1035dc3b40
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF T1566.001 Phishing: Spearphishing Attachment

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image processing. This exploit is embedded within the XFA form structure of the PDF. The heuristic firings indicate the presence of an embedded script payload and an exploit targeting XFA forms. The primary attack vector is likely a phishing attempt leveraging a malicious PDF attachment.

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
8dd7470bfe2b7e22acfd229e59f79e06ba3985d989eeddb33962a0a2a30959e6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101366 bytes

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