Malicious PDF — malware analysis report

Static analysis result for SHA-256 6973b7988f1d3ef8…

MALICIOUS

PDF

64.3 KB
MD5: b85559cd29bc83ef1dcc89cfe4b5fd43 SHA-1: ea3fe8022ffdc627cfeec2c41c1d1665986daa77 SHA-256: 6973b7988f1d3ef8160f3bd3869133a515fe8b7e93876a714d8f589a7cde9309
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 via XFA forms. This indicates an attempt to execute arbitrary code on the victim's machine. The embedded file and ML classifier further support its malicious nature, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
f9aeca787c3c3b3b52957a6bacc0f81b2f8fdb87c0404af4beacf3b8319976ab		 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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