PDF malware analysis — malicious · d5560d227d8b4c2d

MALICIOUS

PDF

12.5 KB

MD5: d39fe892d2512a9a7ebb5605dc975642 SHA-1: ecff0383e9f53a2308ae72e553efb68433e7aaed SHA-256: d5560d227d8b4c2dc255cc068e87f3ef152f0adc1f1a0e253e42f6b2c204afdf

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The file is a PDF containing embedded JavaScript, which is indicative of exploit attempts. Heuristics indicate the exploitation of CVE-2007-5659 via the `Collab.collectEmailInfo` method, a known technique for executing arbitrary JavaScript. The extracted JavaScript files suggest a multi-stage process, likely involving the download and execution of further malicious content.

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` `6fe888a1fca3a987f4224a14a66299a57179ad6bc99d34369e3746f3ec403318`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12182 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5e4e18ce14b5407aaa552428d2c14939b278ecbe7dbb405679aa98cac1d581a2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5029 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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