PDF malware analysis — malicious · b83f300abd633097

MALICIOUS

PDF

45.8 KB

MD5: eca86bc185ae5dcc5485ef08eb15cb50 SHA-1: b051a80eb3b367ed63e1a32a2e4c474c7ab5e5e5 SHA-256: b83f300abd6330975c8e587bcfcfa71005445b55e63ea3fd3d95b66a63491f8b

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript that utilizes the Collab.getIcon method to trigger the CVE-2009-0927 vulnerability in Adobe Reader. The JavaScript is obfuscated and decodes further layers, ultimately aiming to execute a malicious payload. The primary attack vector is the exploitation of this known PDF 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` `16dc1a2a3fc370ef13faf6124b89069913f11a1ec41f535078602b5a3b01ba91`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9215 bytes
`custom_b64_stage_000.js` `a971e3efabbecffda228d1cc1e7ae21ffd45b8ace636a766b110c3b820eb15a4`	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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