PDF malware analysis — malicious · cc25a85b45dd103b

MALICIOUS

PDF

12.3 KB

MD5: af7acf53d2fb2803f4be7cc85a78905a SHA-1: 3c922d2b833941a4d32eb85d017eab55960ccaf1 SHA-256: cc25a85b45dd103b7aad2f16af58904a7b574b32070154bb97cda083f66ffb57

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability through the 'collab.collectEmailInfo' method. This technique is commonly used to download and execute additional malicious content. The presence of deobfuscated JavaScript files further indicates the execution of malicious code. The file is classified as malicious by ClamAV, supporting the exploit attempt.

Heuristics 5

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. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `8c2fdcf8b03cfa0b917df983fa7cc776f1b56514edc44a39e283334d0e5ffcdf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	11459 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b17eca53def65c672332fa86a26cc29c06fad28c02c0747c57e65d35e101eaa1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4705 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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