PDF malware analysis — malicious · 94322fdaefc3d316

MALICIOUS

PDF

2.6 KB

MD5: 5fb367122033b4b08049c74703f31cb1 SHA-1: 986f1587dbecfb7c553a5c5e37cbec3f0ff72775 SHA-256: 94322fdaefc3d316533f44844d2993a7fe6ec5901dda132bda7727705406df75

276 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2007-5659 exploit (Collab.collectEmailInfo). This exploit is known to lead to arbitrary code execution. The embedded JavaScript stream was further processed and identified as suspicious, containing obfuscation indicators. The ClamAV detection of 'Pdf.Exploit.Agent-36306' confirms the malicious nature of the file.

Heuristics 7

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-36306 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36306
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
unescape() call high PDF_UNESCAPE

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

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0028_000.js` `b3e25853cc22320d44f1f4a067367dde64859b7e52b91ff950f2ddd8f6c6d0ae`	pdf-javascript-stream	PDF /JS object 28 at offset 0x55A	2119 bytes
Detection ClamAV: Pdf.Exploit.Agent-36306 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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