PDF malware analysis — malicious · c84c83b7965e6659

MALICIOUS

PDF

7.0 KB

MD5: 811705b95f77522b3f59661eae84bd98 SHA-1: a2b923b7fb9f688a359e1021ef71a4e6dc321488 SHA-256: c84c83b7965e6659643dbcd6202deaed31b19a1de5867fd707a41057f64ae719

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that is obfuscated and utilizes the unescape() function. It also triggers the CVE-2009-0927 vulnerability via the Collab.getIcon method. This indicates the document is designed to exploit a known vulnerability to execute arbitrary code. The embedded JavaScript is the primary mechanism for this exploitation.

Heuristics 6

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. (matched in decompressed stream)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `79b98ea5eed67184f738956b20e3e8a35472f3135aed59b0f16b3de3c7fbf979`	pdf-javascript-stream	PDF /JS object 6 at offset 0x18F	5901 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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