PDF malware analysis — malicious · 9f934409cc4dfbb0

MALICIOUS

PDF

45.8 KB

MD5: 5ff778a65777544182b003b83688bbee SHA-1: 0eb8111a1c8317a7e9010f63da9b25f29f313a43 SHA-256: 9f934409cc4dfbb0de333cbbdd1842f106a15c0a9c29e4116ec0441cf0b7612a

136 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that is heavily obfuscated and utilizes a custom Base64 decoder. This script is designed to exploit CVE-2009-0927 in Adobe Reader, likely to download and execute a secondary malicious payload. The presence of exploit indicators and obfuscated code strongly suggests a malicious intent to compromise the user's system.

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` `c58ccb42617d8641e7daeae959afa0fe5cf888097a84620658cf57ca02163a4b`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `5b3ecc644f6321e8cb69e567c25953728a13fafb67c565e6f284b24c238b80b5`	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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