PDF malware analysis — malicious · faf14df3371ca797

MALICIOUS

PDF

13.2 KB

MD5: a2213a1c2387b09259dbcc3dce58d38f SHA-1: 6e714112bb7c8dec4e9b54b63ca84f89701bbc31 SHA-256: faf14df3371ca79795d57fbb0d60aeed0102c79b94ee5b5f62f2f5d4b65fd5e0

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The file is a PDF containing embedded JavaScript, identified by multiple heuristics as malicious. Specifically, the 'CVE_2007_5659' heuristic indicates the use of the 'Collab.collectEmailInfo' method to execute JavaScript, a known exploit technique. The embedded JavaScript streams, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', are likely responsible for downloading and executing a secondary payload. The ClamAV detection 'Pdf.Exploit.Agent-36064' further confirms its malicious nature.

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` `9a997ada05a6697233a47a62497beae77d8435b0ce62f66669a4b76228282ce9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12229 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `afaa7d13be2de7a3172ac51d5b93a46d054730bbca62768b88b2f5dd38f42fc8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5101 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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