PDF malware analysis — malicious · 3a20e96907fbc124

MALICIOUS

PDF

12.5 KB

MD5: aa0dbb463741533ec54f881d23d26f26 SHA-1: 974a4240d0e3d65d7464b833bd6fd0c0a4cc5985 SHA-256: 3a20e96907fbc1247428e499afa4b0d94eefd98365ffb8b629bfd14e8a26cdaa

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is flagged as malicious by ClamAV (Pdf.Exploit.Agent-36062). Heuristics indicate the exploitation of CVE-2007-5659 using JavaScript, likely to download and execute a second-stage payload. The deobfuscated JavaScript files 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' were extracted, suggesting a multi-stage attack.

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` `d2872dc9ed011a8165e12172d0538acd789bc622e5a95ea59ca4de96cddeb9ab`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12296 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b7902d4f9fcd09b6791a55bf7b71f620a41db67665835ae6105fb9b999815cce`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5074 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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