PDF malware analysis — malicious · dd092a52c80822e9

MALICIOUS

PDF

2.4 KB

MD5: e79bda45327307777c3fe049c48e8c20 SHA-1: 212ccdcbeecf6a89ef3a0e01aa95b4be78d0de56 SHA-256: dd092a52c80822e9042fa74148818c981ba21d926a4b433f8f913b15a079020c

120 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_0927 heuristic firing suggests exploitation of a known vulnerability via the Collab.getIcon method. The embedded JavaScript, particularly the use of unescape() and obfuscated string concatenation, points towards the execution of a malicious script. This script is likely designed to download and execute a second-stage payload, a common technique for initial access.

Heuristics 5

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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_obj0007_000.js` `c4c6aad6ddd2425203333948984e4364580d7c4ae15a5aa32bd800007fb50154`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	1570 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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