PDF malware analysis — malicious · f85e406d9220fbf9

MALICIOUS

PDF

6.0 KB

MD5: b75b93cc50ce93e38415f69d80bf69a6 SHA-1: e92f5fc21eb870abcb9f4f04753e78e955dbbbc8 SHA-256: f85e406d9220fbf924ff9c4705a87c8f36ea2628d7d5e5a8852aa41ca36ef919

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and utilizes the unescape() function. Critical heuristics indicate exploitation of CVE-2009-0927 via the Collab.getIcon method. This suggests the document is designed to exploit this vulnerability to execute arbitrary code, likely leading to further malicious activity.

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)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `16299846a75799cc3867254ca8b49b646dfed6bb2180f0169e8385dd502794b7`	pdf-javascript-stream	PDF /JS object 6 at offset 0x197	5036 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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