PDF malware analysis — malicious · 8a843cd26c6b3afa

MALICIOUS

PDF

48.8 KB Created: 2011-05-17 08:39:07 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: e6513ebf42c57ba568d64e0359788a4d SHA-1: c6bbdf326a8ea437fc04e09607ec3373237f75dd SHA-256: 8a843cd26c6b3afa984e9f970b97f15522790e07392ea1fe134c30e866d39cdf

62 Risk Score

Malware Insights

MITRE ATT&CK

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 arbitrary files. The embedded URL http://artisanballoonz.com/system/system.exe is highly suspicious and likely serves as the download location for a malicious executable. The document body is heavily obfuscated and does not provide further clues, but the exploit and the suspicious URL 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_off000004f0.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F0	73272 bytes

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