PDF malware analysis — malicious · af011f0907103dc0

MALICIOUS

PDF

45.8 KB

MD5: 072c2e396d38dc295ae4a75d33fb44e8 SHA-1: da2c55c6906fa5975c1759b87aa9c6b208131b16 SHA-256: af011f0907103dc0aa45613fb05f8397408758bc5daf2268b9a98e524f158c62

98 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that utilizes the Collab.getIcon method to trigger the CVE-2009-0927 vulnerability in Adobe Reader. This exploit is designed to download and execute a second-stage payload, indicating a malicious downloader or dropper.

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. (identified after JavaScript deobfuscation)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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_obj0008_000.js` `1006c36a6e7f85bb80912fd26da3c38bd55c2067cd91e0d7b6e63bf4ed4ebf90`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `2680836d672d6b56d8048cb978d60a46abc4ba4943a8c17cbd121e0cdf5183de`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1517 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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