Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86c5609978dec68…

MALICIOUS

PDF

53.8 KB
MD5: 3e12a306898df87e6e0b8f614d869ea4 SHA-1: 9771ee652558dc5d3c89a1029b4cc827607837b0 SHA-256: e86c5609978dec68e4a3056572e9e121b0dc2523ad89740ff4efc22de5202b9f
136 Risk Score

Malware Insights

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

This PDF document exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic firing indicates a direct match for this exploit. An embedded script payload was also detected within an XFA form, suggesting the exploit is used to deliver and execute malicious code. The exact nature of the script's payload is not fully discernible due to obfuscation, but its presence strongly indicates a malicious intent, likely to download and execute further stages.

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.
  • 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.
  • 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
520ce7ef98b59b1af9dd49d074fbf4460376cca21a459bd9e66ce980c759e60f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 54316 bytes

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