Malicious PDF — malware analysis report

Static analysis result for SHA-256 d989f83d02aedfd6…

MALICIOUS

PDF

62.9 KB
MD5: e1f647d6a301f6596d8406204ed3b01c SHA-1: c102f6bc4c8b898a5f56549db7005ab89bcc445b SHA-256: d989f83d02aedfd66532dac2c8ecd28e926643f5443621e7a38fb8ddec4c24c0
138 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the presence of an embedded script payload within an XFA form, triggering the CVE-2010-0188 exploit. The XFA structure and embedded file suggest an attempt to leverage this vulnerability for code execution. The primary goal appears to be the exploitation of Adobe Reader to deliver a secondary payload, though the exact nature of that payload cannot be determined from the provided evidence.

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
405559364a2bcc186b0ccb9900b9fc60b9237116f5584bbcab75607675be6dcb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 63627 bytes

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