PDF malware analysis — malicious · ebb53a52d4caeeff

MALICIOUS

PDF

12.7 KB

MD5: f3d590f28e5827397bf3a1818823afa8 SHA-1: 1be436e11a9e95c66ce63df3e7e130d491f21982 SHA-256: ebb53a52d4caeeff2218aa52486976bdeb26fd904b4041d65d7434efb4e8325b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is known to exploit the CVE-2007-5659 vulnerability. The critical heuristics indicate the use of JavaScript to execute malicious code, likely to download and run a second-stage payload. The presence of deobfuscated JavaScript files further supports this. The ClamAV detection name 'Pdf.Exploit.Agent-36062' also points to exploit activity.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `fd87523bcd9385fd9e599eec3aaac3cb6582967a33373790a03310bd9d9a7269`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12405 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b21dbf0bdfccfbe9a0c15e6389652fa6dee5463bda9ccf6d3c7ad63cc86e7f8a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5103 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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