Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b72d7aaccb2bf2f…

MALICIOUS

PDF

327.6 KB
MD5: 27ede5d4cdc358a76ded5ec277e757b0 SHA-1: f3f6b3414cf65c22aa645a1500e56d78925e4a5e SHA-256: 6b72d7aaccb2bf2f2cc08f8fab1c1a65beccd62d2f404d6c04806f3dc3c7ed3b
148 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The critical heuristic firing for CVE-2011-0611 indicates that this PDF exploits a Flash Player vulnerability. The embedded SWF file, identified as Tatsumaki.swf, likely contains the shellcode for this exploit. The presence of an embedded file and the exploit technique strongly suggest this document was delivered as a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Adobe Flash Player RichMedia exploit critical CVE likely CVE_2011_0611_FLASH_RICHMEDIA
    PDF combines RichMedia Flash activation with an embedded AS3 SWF loader (ByteArray/loadBytes) and shellcode heap-spray staging. This is the static exploit shape associated with CVE-2011-0611 Flash content delivered through Adobe Reader.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
Tatsumaki.swf
1f35f3ee8c2acb99845e009cb0fea08275e031996132af652c8b924d3f510579
pdf-embedded-file PDF EmbeddedFile object 18 at offset 0x3AF 3263 bytes