PDF malware analysis — malicious · cf4c0cf28b32a9ba

MALICIOUS

PDF

651.6 KB Created: 2011-04-27 03:22:49 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: c0d1490cb807e2a649eb6393d93882b4 SHA-1: 374ab7b0e5d75d294b51a62a034297e1ff541a33 SHA-256: cf4c0cf28b32a9ba0889e69eb63a11d76e8b41a568e6f738413d3b039289ddff

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The sample is a PDF document that exploits the CVE-2008-2551 vulnerability. This exploit is designed to download and execute a secondary payload from a remote URL. The embedded URL 'http://artisanballoonz.com/system/system.exe' is highly suspicious and likely serves as the download location for the malicious executable.

Heuristics 4

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 JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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_002_off0000111a.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x111A	73272 bytes

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