Malicious PDF / .DOC — malware analysis report

Static analysis result for SHA-256 6d1d7fad33b41667…

MALICIOUS

PDF / .DOC

175.7 KB
MD5: e83ff970e562c268c443dfcf0e451c03 SHA-1: 22ab3e666a00f95e70b2bbc086f77f9ff6a278a9 SHA-256: 6d1d7fad33b41667afc94d68e8f96b3537cd0df458d79c1d4b5d1817512aad1e
110 Risk Score

Malware Insights

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

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability, which is known to exploit Adobe Reader through embedded XFA form content. This exploit is designed to execute arbitrary code, indicating an attempt at initial compromise. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
e3e8e2cfb7614e695705b226701b8797ee0da5c253685eff5cfcc10d9cd7324a		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x51 13454 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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