PDF malware analysis — malicious · 346e3792feda7919

MALICIOUS

PDF

97.2 KB

MD5: 4cdfe94a586e8a7445a5005ff1d4d5e8 SHA-1: b41efa9d4efec1ef68b4bc7d96042f136f255615 SHA-256: 346e3792feda791923c438af565ac3228b4b2851eb20feec061762e003c07304

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the `unescape()` function and targets the `Collab.getIcon` method, indicating an exploit for CVE-2009-0927. This exploit is known to facilitate the execution of arbitrary JavaScript, which in turn is likely used to download and execute a secondary payload. The presence of multiple large JavaScript streams and the critical ClamAV detection further support this assessment.

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.
ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `7a26b07d92fe4d8d195244c7b3b852fa1cc9348f17de45507f74070ca4258e91`	pdf-javascript-stream	PDF /JS object 7 at offset 0x297	98608 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `86465197bdff304d381da23193abbce1a46ab310cf9c23342b69a2757b198567`	pdf-javascript-stream	PDF /JS object 7 at offset 0x297	96790 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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