PDF malware analysis — malicious · e4a1b8ea48588a6c

MALICIOUS

PDF

45.6 KB

MD5: fca299d46738eb0d23bea66ddbf7ba42 SHA-1: 23342cb6dc24906c6a8c62fa5f7c25bfe127abea SHA-256: e4a1b8ea48588a6c338c6a77953c227fa1d8a98ea8720da76617184143f4a10e

98 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that utilizes the CVE-2009-0927 vulnerability in Adobe Reader. The JavaScript is obfuscated and decodes a second-stage payload, which is then likely executed. This indicates a malicious document designed to exploit a known reader vulnerability for initial compromise.

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` `164ad16c342d0fb01fa9e81cca5ad9ec4a24c0e4ec0742c1fb2881ec67fc0b12`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9187 bytes
`custom_b64_stage_000.js` `3f76acbbd4cab3f06d84a3ad0a79335cd6554de81c37af5a8de708439d557c2c`	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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