Malicious PDF — malware analysis report

Static analysis result for SHA-256 03de3020b29d3e25…

MALICIOUS

PDF

10.0 KB First seen: 2015-09-15
MD5: 076cf8536c3da382489fbec7e0e3fb1d SHA-1: 2d370fc64449d67244880c34e50b072d1cff23e9 SHA-256: 03de3020b29d3e255a20318ef0fa63577e52dd5a76a91801075eec4c162bb01a
110 Risk Score

Malware Insights

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

The PDF sample was flagged by multiple heuristics, including a critical ClamAV detection for Win.Exploit.CVE_2010_0188-7, indicating it exploits a known vulnerability. The ML classifier also strongly indicated maliciousness. The presence of an embedded file and XFA form suggests the exploit targets PDF rendering or form processing capabilities to achieve code execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.4/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5A 13012 bytes
SHA-256: 495099c24a2612d9c3c7e2bf1dd78bf85d0dbd228cc98b8553e672cd559482fc
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
xfa_image_rawvalue_000.tif pdf-xfa-image-tiff XFA image/rawValue TIFF payload near offset 0x57F 8346 bytes
SHA-256: 40d9022e2dcaa94fc889b947d2d8d69c452742a481a8f57c98bd73916bcec53e
Detection
ClamAV: Win.Exploit.CVE_2010_0188-7
Obfuscation or payload: unlikely

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