PDF malware analysis — malicious · a1905da75b6c8643

MALICIOUS

PDF

12.4 KB

MD5: 52cbf1f37da892f235ef097d68b01b7e SHA-1: 5c33eeda4bb0c2d61072a73c9f799e0c71272452 SHA-256: a1905da75b6c86430a5db1a863019279876be2cccc4963b86c040b404a3ce728

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the CVE_2007_5659 heuristic, which is designed to exploit a vulnerability. The ClamAV detection 'Pdf.Dropper.Agent-9448687-0' and the presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') indicate that this file acts as a dropper. The embedded JavaScript likely downloads and executes a second-stage payload, a common technique for malware distribution.

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.Dropper.Agent-9448687-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-9448687-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `49f5b8dccbcf8f7903243b474af72eddfc05abd9bd0cec0bb868ea8e8bc8cc25`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12063 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `51c89a3155e0149d1a477e6fe4da068253cacd0e633b1474a7194aa08acb880e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	4963 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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