PDF malware analysis — malicious · 44f02a0065822d62

MALICIOUS

PDF

12.6 KB

MD5: 297bdd367deec6764ce90ffbd7f7393f SHA-1: dcdb2de1c6b39b800e6e75be0867a20b55ca0077 SHA-256: 44f02a0065822d6267497c4644b845da102f6c45661c7c643277a88303f21ed0

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 heuristics as exploiting CVE-2007-5659 via the Collab.collectEmailInfo function. Two deobfuscated JavaScript files were extracted, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, indicating a multi-stage exploit. The ClamAV detection 'Pdf.Exploit.Agent-36062' further supports its malicious nature. The primary attack pattern involves leveraging this exploit to execute arbitrary code, likely for downloading additional malware.

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` `a96dcd219de436564187619b79ef2f8ebd9ae8a6602d2d9291bd383b88eeea68`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12372 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4c80a29de4e1c6312e1ba30029a0fb6641427e761203c2e402d364e2e0d46c50`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5113 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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