Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b05567adb3de491…

MALICIOUS

PDF

99.6 KB
MD5: 07a7f2e1a8c2d0d13aaaf1064591e2b5 SHA-1: 5f5d2a4f3876c204f672d483d09861997374d18a SHA-256: 5b05567adb3de4913fc8cd44b3bd4af2ceccf61dac941fa31e7a5e1e1cf0bc4a
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. This exploit allows for the execution of arbitrary code, likely leading to the download and execution of a secondary payload. The presence of embedded script payloads further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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 script payload in PDF stream low 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 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
a0a9300078cf6bd9148a9d65949c41382b15ace1370b9a4c70ff8bf967c48058
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101205 bytes