PDF malware analysis — malicious · 87d14f6dea801d78

MALICIOUS

PDF

9.2 KB

MD5: dc91c69ac2e78dd4fb30bb25b0b8899a SHA-1: ee351ee851a4d46f3b451e0620f6dc7257edd972 SHA-256: 87d14f6dea801d78652c95a1be0df12fd2e37b75a5c24a84cc47baea8c4acaf1

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains embedded JavaScript that exploits CVE-2007-5659 (Collab.collectEmailInfo vulnerability). The JavaScript is obfuscated but deobfuscation reveals it is designed to execute malicious code. The primary attack vector is the exploitation of this known PDF vulnerability, leading to arbitrary code execution.

Heuristics 6

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-35905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35905
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `d8a6b4ad1abf04d0c4a4f89535cfb57f7312edef25c443f4e844c8ec9d0929dd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	352 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `53e43364ea041a23a44800857f04b18aa81f31f7db6032b257be6453d20e03a6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11920 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `27ed2f6084ee381c4b5a73438e77348807e27aab0dd3190b467a29be421a7bfb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	4994 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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