PDF malware analysis — malicious · d93f8fe6c71c5ccc

MALICIOUS

PDF

2.8 KB

MD5: 3c79f8bfaeb2acb7aaeb797bedf9ddfa SHA-1: c04c4006d089fad356479dac491543eac26620b7 SHA-256: d93f8fe6c71c5ccc5edd136d55268bd518d7ea99a780c95e8657c7c3c94d6f05

196 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious JavaScript T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript/TypeScript T1059.004 Command and Scripting Interpreter: Python

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger its execution upon opening. The critical CVE-2009-0927 heuristic firing indicates the use of a known vulnerability related to the Collab.getIcon method, commonly exploited via JavaScript in PDF documents. The embedded JavaScript stream, identified as 'javascript_obj0009_000.js', likely contains obfuscated code designed to exploit this vulnerability and download a secondary payload. The presence of the unescape() call further suggests code obfuscation typical of exploit delivery.

Heuristics 6

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (matched in decompressed stream)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `7c9a361e66d5ae30b712a1988d555b272419391b0fdb04e6094f4f8deb160c78`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	2147 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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