PDF malware analysis — malicious · b2c7f0df86ec485f

MALICIOUS

PDF

6.1 KB

MD5: e9bd80cd1ce04b120c0efef377360a06 SHA-1: 771919188889aac9e77b85970aca065120925e07 SHA-256: b2c7f0df86ec485fd85fc98b859174b091e1bd4f7bd6f0b580de8587b6752701

238 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript that utilizes the 'unescape()' function and exploits the 'Collab.getIcon' method, indicative of CVE-2009-0927. This vulnerability allows for arbitrary code execution when the PDF is opened in a vulnerable reader. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Heuristics 7

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: Pdf.Exploit.Agent-35646 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35646
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_obj0007_000.js` `35c37a1fb6e12713ace43447ce4aa0e4cfef9532da7a467ae81c2fcd2f15e27a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2B1	3170 bytes
Detection ClamAV: Pdf.Exploit.Agent-35646 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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