PDF malware analysis — malicious · 4ad0f08b543fddde

MALICIOUS

PDF

45.6 KB

MD5: 59e09a1153cfb24b228c8053416d270c SHA-1: aa6a217da97ffaa4b245fc825422c016fe2d4430 SHA-256: 4ad0f08b543fdddeeec27fbf1a615aa5770c8f529dae385852786f21aab6fb7f

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript that utilizes the Collab.getIcon method to trigger the CVE-2009-0927 vulnerability in Adobe Reader. The JavaScript is obfuscated and decodes further layers, ultimately aiming to execute a malicious second-stage payload. The primary attack vector is the exploitation of this known PDF vulnerability.

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)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `256e8b472e5c49f41f0f65c41b702dc4ff093cb2176740673f19631aec6f981f`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9187 bytes
`custom_b64_stage_000.js` `690143178164f207d9bfe989d04d810da42bb38e459c8f048e4ac899e0d38ed6`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1511 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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