PDF malware analysis — malicious · ce599d92620d2cc6

MALICIOUS

PDF

174.6 KB

MD5: b93f434cb8b055dae00aaa9765075162 SHA-1: a186326e535e6c861ea4502cebdf4346dbcf8e00 SHA-256: ce599d92620d2cc6f038ea9889a4c029ed0dfb548dc1da1be12c8e4db9bb5182

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages multiple critical CVE vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) related to PDF object handling. The heuristics indicate that the JavaScript is obfuscated and designed to be evaluated by the PDF launcher. ClamAV detections further confirm the malicious nature, identifying it as Pdf.Exploit.Agent-35932 and related extracted artifacts as Js.Exploit.Shellcode-18. The likely intent is to download and execute a second-stage payload.

Heuristics 8

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)
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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-35932 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35932
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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `75e7c4c6f1bdb8fd57ced79141c2d476cba7017cf9f39f6169f13de73e6d11f7`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3903 bytes
Detection ClamAV: Pdf.Exploit.Agent-36307 Obfuscation or payload: unlikely
`legacy_pdfkit_stage_000.js` `cc2c9919f727926d54de2e82846e64cf781fb004557fa11f30f1cd61fe1d7e94`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x115A	8288 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).

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