Malicious PDF — malware analysis report

Static analysis result for SHA-256 175ea5f06922cbcf…

MALICIOUS

PDF

76.0 KB
MD5: f6c42b955d4f80c93559c5d481c68515 SHA-1: 77b2a45badca6fcf59c35fa69e50b21cf389bc8f SHA-256: 175ea5f06922cbcf3393f4f5f4e4d43644abde5f8802739bed678b033f6a15ff
176 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics and an ML classifier, specifically triggering the CVE-2010-0188 exploit for Adobe Reader. This exploit is used for client-side code execution, and the embedded nature of the exploit suggests it was delivered as an attachment. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
a4a314250d1d09316aa2eab24e79dcb2640546f3b3173d2a3c266e3ae7208e3e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 77063 bytes

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