Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0e62a6a9f7b5acc…

MALICIOUS

PDF

121.0 KB
MD5: d47d1f1215c88036e0ada834a4bee3a8 SHA-1: 511eafa9e85a95d88e82e50ca7c2abbd2ac58b10 SHA-256: a0e62a6a9f7b5acc5ea9b58c0afe184460ed1774e5eb5d88769fa880cced1ff6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and LibTIFF. The heuristic firings indicate an embedded script payload within an XFA form, which is characteristic of exploit documents. The embedded file and ClamAV detection further confirm its malicious nature. The script likely attempts to download and execute a second-stage payload.

Heuristics 7

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • Embedded script payload in PDF stream medium 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 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 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
37fb851e59f4b16c1daf351b3dea6d9bec4612a36081c1a91e4c7827279dcc11		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 123138 bytes

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