PDF malware analysis — malicious · 7d6b2c22fc6faa85

MALICIOUS

PDF

45.3 KB

MD5: 5907bb9b7b0fdad4ca38e6fe5410a0f7 SHA-1: de5398d599bf99e1e7d710c1ab3c5bdba6845701 SHA-256: 7d6b2c22fc6faa857f28a3e075199d5ba6d3e5c0164d5c998b54df35ab368fea

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.001 Malicious Link: Malicious Link T1059.007 Command and Scripting Interpreter: JavaScript T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF file contains embedded JavaScript that is obfuscated and decodes multiple layers. The critical heuristic indicates that this JavaScript exploits CVE-2009-0927 using the Collab.getIcon method in Adobe Reader. The primary goal appears to be the execution of a second-stage payload, likely downloaded or initiated by the exploited 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` `6a581e253c3ad98b3bc35d5f39d12feeed2706c3b2d549372952c99de087d8c6`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1D3	9115 bytes
`custom_b64_stage_000.js` `1dd57a7a1c56bcda595b0f7daebaccb3d7cfd8db8692147ec58426ce09f3182a`	deobfuscated-js	custom Base64 decoded JavaScript layer 2 (PDF /JS object 8) at offset 0x8A7	1493 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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