PDF malware analysis — malicious · 7ccf64ed3c092b4a

MALICIOUS

PDF

45.4 KB

MD5: e762b323d02ec0b414d5da8f926f8e45 SHA-1: c96ac7fa074617535da718d80ebf3a24b2170b1c SHA-256: 7ccf64ed3c092b4a897389f9b7964b087cbc4176dba009c9b56bbd998ed00e21

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious File Execution: Malicious File Execution T1027 Obfuscated Files or Information

The PDF file contains embedded JavaScript that is obfuscated and decodes a second-stage payload. This payload is designed to exploit CVE-2009-0927 in Adobe Reader, indicating a clear intent to compromise the user's system. The use of custom Base64 decoding and layered obfuscation suggests a deliberate attempt to evade detection.

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` `962df510f7d5f95ee06ce2c2b2cb9b4af32cfab38bad42cb3b2a6c35f701cabd`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9143 bytes
`custom_b64_stage_000.js` `5179266ea441fa12bf9c8d04748284f4166d0386992535412feea091604d3a4c`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1499 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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