PDF malware analysis — malicious · 46032bec26881870

MALICIOUS

PDF

13.2 KB

MD5: 32de7ad6cd04154366212ca25f37a32d SHA-1: af2a8ef7b4b2ecab600b1e09c83e0a717744d1f5 SHA-256: 46032bec268818701dbf92af3b540bf62f64ecab559826532b46b92ebcb2d595

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript that exploits CVE-2007-5659 using the Collab.collectEmailInfo method. The heuristics indicate that this JavaScript is deobfuscated and likely intended to download and execute a second-stage payload, as suggested by the presence of 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'. ClamAV also identified this as Pdf.Exploit.Agent-36064.

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` `817075b0e0d17adba90bfcd67a8fdc51acee4846167181779d569c3f37966ffb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12179 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c13548316f4c655ae840b8c9c781ccbc7b7b23d840bee91ca3bcd811dd2b9d01`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5114 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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