Malicious PDF — malware analysis report

Static analysis result for SHA-256 399652933fdfd553…

MALICIOUS

PDF

63.3 KB
MD5: 84358e8b105eb33e5a788c3e686a39e6 SHA-1: 96e41ab72bb0ce635913201cdc5f9cfcaaf0e29e SHA-256: 399652933fdfd5535a77fe468885a41f938d7ed8046e3c17103c84e446ba1fb3
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains an XFA form that triggers the CVE-2010-0188 exploit. This exploit is known to be used for delivering malicious payloads. The embedded file and script markers further indicate the presence of malicious code. The primary attack vector is likely a user opening a malicious PDF document.

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
209213c07563e0b5ae165375417ba2379fd8e1acb48852ea4e090c4c74b0e8c2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 64049 bytes

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