Malicious PDF — malware analysis report

Static analysis result for SHA-256 1608c509e06a804c…

MALICIOUS

PDF

100.0 KB
MD5: fdfff18f57d62766718e32603a13a121 SHA-1: a8f9e7eef7d8a30aac554211f49f4a9e68d73276 SHA-256: 1608c509e06a804cfd7535ad1bee48aa28db2c492fa3c58e59ea101c6a03099f
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms, to execute a payload. The ML classifier strongly indicates maliciousness. The embedded script, though truncated, likely facilitates the execution of the exploit, potentially leading to the download and execution of a second-stage payload.

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
c35ee13628f904ed3b81f6f282c6a00f8ea5d3e2ddb78bc43ccf6c4798391d07
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101616 bytes