PDF malware analysis — malicious · b74df02ed4877a31

MALICIOUS

PDF

12.4 KB

MD5: b0ba785e0a445c50efdbf520522d99ed SHA-1: 794c30b35a298164cc0c25fd6e6282301710e40b SHA-256: b74df02ed4877a31140300979d7e8319cc7730360011866e89436443eb17adcb

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. Critical heuristics indicate the exploitation of CVE-2007-5659 using a technique that concatenates info fields and evaluates the result. ClamAV also detected this as Pdf.Exploit.Agent-36062. The deobfuscated JavaScript files suggest the primary function is to download and execute a secondary payload, which is a common attack pattern for exploit-laden PDFs.

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` `f1cfaa97d1c9306dae0dd5b2ed9028d395ba8cfba62168e48a60a37b78f0af06`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12076 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `94ebf49946c9a16445f61b684600d6947fa2612250f3049e915dbd5cf989bd51`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4979 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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