PDF / .TXT malware analysis — malicious · c4c0644a666422c2

MALICIOUS

PDF / .TXT

6.9 KB

MD5: 3ba1de884e8996c506511dd70dfc2860 SHA-1: 700137a1946be90dbcb9d49e0541c84f9d100feb SHA-256: c4c0644a666422c2534193221f2ea5f60b4830aa65e0cb98ea7593c5d434a3cb

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_0927 firing suggests exploitation of a vulnerability related to Collab.getIcon. The presence of an embedded JavaScript file (javascript_obj0006_000.js) and the ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further confirm its malicious nature. The JavaScript is likely used to download and execute a second-stage payload.

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` `30ff4b44091bd88268c170ade6d09fb41ce875acee9b82d39df4c267eeac0f93`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19D	5791 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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