PDF malware analysis — malicious · bad1755e9ea40a6c

MALICIOUS

PDF

45.8 KB

MD5: 3a4bc907d39e58e38665bd3969f6bca9 SHA-1: 2aa51293a61c8af8fbe15eabf72bd37257e471da SHA-256: bad1755e9ea40a6cd6d2524ff4424d15dcb5195b573da480e3012d9bd470d2df

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File Execution: Malicious JavaScript T1027 Obfuscated Files or Information

The PDF file contains obfuscated JavaScript that exploits CVE-2009-0927 in Adobe Reader. The critical heuristic indicates that the JavaScript decodes and executes an exploit stage. This suggests the file's primary purpose is to deliver a secondary malicious payload by leveraging this known 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` `d1cc3cf9e8cd2387967df429e2756d174bbbf572adb3c3790964dac2a70b34de`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `2ccbe4cc03b98bfd23417fd18d4f6447baeabd8c2c407df2db58f4ebb285f45d`	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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