PDF malware analysis — malicious · 48c542b04f199121

MALICIOUS

PDF

12.4 KB

MD5: 0c4bcfc163ed7c61dea31570a21eaa39 SHA-1: 460721575a39b6d831fd4e03a6e9659b89184bf6 SHA-256: 48c542b04f19912162141431c8fda886acf8111d19b5f005874e6392b97fe082

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified by multiple heuristics as malicious. Specifically, the CVE-2007-5659 heuristic indicates the exploitation of a known PDF vulnerability using JavaScript. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further malicious content. The ClamAV detection 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-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` `919071291a93708129593cdf3fcfcdeedd2cced38cacd5f44a850b9bf15b5f59`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12113 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b8be5fc33701cfd2cd38baa3bc6a61f40cdd627298d4825037a00ae4c02c5bef`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5016 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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