PDF malware analysis — malicious · c8ea8b665eca7fef

MALICIOUS

PDF

66.5 KB Created: 2011-06-22 16:37:13 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: 31696e77a77da7e3dbf24d7b6030b4ef SHA-1: 7a4347e99cea05aec7db9bcaacf5c1599a76ef68 SHA-256: c8ea8b665eca7fefb7bbee9fe75c113679d9e1e14d414df960fdc876a7ce03e2

60 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The critical heuristic firing indicates the exploitation of CVE-2008-2551, a known vulnerability in C6 Messenger ActiveX. This suggests the PDF is designed to download and execute a secondary payload from the embedded URL http://artisanballoonz.com/system/system.exe. The document body was unreadable, but the exploit and URL are strong indicators of malicious intent.

Heuristics 2

C6 Messenger DownloaderActiveX exploit critical CVE exact CVE_2008_2551

PDF stream bytes contain HTML/ActiveX content configuring the vulnerable C6 Messenger DownloaderActiveX control with propDownloadUrl and propPostDownloadAction=run. This is the published exploit shape for CVE-2008-2551.
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://artisanballoonz.com/system/system.exe
- http://c6.community.alice.it/download/DownloaderActiveX.cab#Version=1,0,0,1

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_001_off000008aa.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8AA	73272 bytes

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