PDF malware analysis — malicious · 2b407b2567b440fc

MALICIOUS

PDF

593.6 KB Created: 2011-05-17 09:11:39 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 3.0.015 (http://www.tcpdf.org))

MD5: a40b2153c0820bbb9cb8abf92b6342a7 SHA-1: edb24c68c0b3f8b84e7947a5211b609b33409740 SHA-256: 2b407b2567b440fc03e4eb70fcfe1016940b22b179b3f6e839547ba339152729

76 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF contains an embedded JavaScript stream and a critical heuristic firing for CVE-2008-2551, indicating an exploit for a downloader. The embedded URL http://artisanballoonz.com/system/system.exe is likely the download location for the secondary payload. The exploit aims to download and execute a malicious executable, likely for further system compromise.

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_004_off000010d2.bin` `80ce46be3b4d5733393d911e720cc341eac961413bc8841086c1643fee9fc14b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x10D2	73272 bytes

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