PDF malware analysis — malicious · b741ba4dd26d5d0f

MALICIOUS

PDF

284.2 KB Created: 2011-05-26 12:40:35 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: e1845227ef1d1fcb5786b987e934676a SHA-1: 467cbe7553ecf4ee6956d857f61239605867583a SHA-256: b741ba4dd26d5d0f343f481e68a8136951ddfe7a0c5835d7f596ecf92cc7b5d8

62 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link/Object T1204.002 Malicious File

The sample is a PDF document that contains a critical heuristic firing for the CVE_2008_2551 exploit, which is known to download and execute secondary payloads. An embedded URL points to a suspicious executable file, 'system.exe', on the 'artisanballoonz.com' domain. The document body was truncated and unreadable, but the exploit and the presence of a downloadable executable strongly indicate a downloader attack pattern.

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_off0000054a.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x54A	73272 bytes

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