Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b81bace0d1cd85…

MALICIOUS

PDF

63.4 KB
MD5: bce05c0a606ad03f16300ca51dac4d2a SHA-1: 0c3ae16ac32316937af3ed23eb23a9c3fe9ee794 SHA-256: 33b81bace0d1cd85fa2a6aa7323338fe357f18550e8471848f2c283a3e6b2eb2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1190 Exploit Public-Facing Application

The PDF file contains an embedded script payload and triggers a critical heuristic for CVE-2010-0188, indicating an exploit targeting Adobe Reader. The XFA form structure further supports this, suggesting the document is designed to leverage this vulnerability to execute arbitrary code upon opening. No specific malware family could be identified.

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
46481f5169f08c2b5dc2a9adcf1e237c7f5174ded98f2250ec5e68ced57d7d00		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 64167 bytes

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