Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee031129b3787362…

MALICIOUS

PDF

86.0 KB
MD5: 6e1e4222a954afe31de9a5e55ba8d4b3 SHA-1: a8150d82dd3724b2145ab69c4afb80351ee839ea SHA-256: ee031129b37873620c48edee70f4a3a2768139acff2455a9c91e803d41802498
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component, to execute a malicious payload. The presence of XFA forms and embedded scripts strongly indicates an intentional exploit. The embedded file and ClamAV detection further confirm its malicious nature. The attack pattern is consistent with exploiting a known PDF vulnerability to deliver a secondary 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
b33551bfcf7869e60ae8ea262afbca531a63d8fa74aff7e78c883de60a29fadc		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 87287 bytes

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