Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f84e523484eec5d…

MALICIOUS

PDF

99.6 KB
MD5: 9aa7b787ee048b85d573693986964126 SHA-1: 30b4db2690271d8e34063987d36962c0758bd97c SHA-256: 7f84e523484eec5ddf37169b9b90bdf19a47c6bda7b5e9adfaf4d0aaa18e1e95
136 Risk Score

Malware Insights

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

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image processing. The critical heuristic indicates a direct match for this exploit, suggesting the document is designed to trigger this vulnerability upon opening. The presence of embedded script payloads within XFA forms further supports the malicious intent, likely to download and execute a second-stage payload. The document body is heavily obfuscated and does not provide clear user-facing content, reinforcing the exploit-driven nature of the attack.

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
349598cc2cad3018ae31dcf8fde35467c4f02bc90303c6a4e7bba8d0904d400d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101215 bytes

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