PDF malware analysis — malicious · 4145cd9b78191920

MALICIOUS

PDF

45.8 KB

MD5: 17be5f925da2d8be329f82bc914dfe1a SHA-1: 97343663bc697cf96e7fe6dfa447b87ea6938637 SHA-256: 4145cd9b781919206e5049e1a78c0ac68ce1a4226de3957795ac704407e2838b

98 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 utilizes the Collab.getIcon method, indicative of the CVE-2009-0927 vulnerability in Adobe Reader. The JavaScript is obfuscated and decodes multiple layers to ultimately execute an exploit stage. This suggests the file is designed to compromise the user's system 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)
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` `df20e6c4bd3de6362e99ca2f09d4172ea23b6e0019c16f5e07aaa48948febdc1`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `eaf25136d1ad5ccacaeac7f1aee20634165859e38aef26a6d23452bbd7a1fdfd`	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).

Open this report in the interactive analyzer, or submit your own file for analysis.