PDF malware analysis — malicious · 56042270cc715017

MALICIOUS

PDF

12.8 KB

MD5: 06c4d1f826f35fca435c01973951f095 SHA-1: aea51d2560ef9b33a3b96f357320c3d7db285db2 SHA-256: 56042270cc71501701af311364ca979f2892814d91e951aedfde7c5e30718fa1

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including CVE-2007-5659, which is known to be used for exploiting PDF vulnerabilities. The extracted JavaScript streams, named legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, suggest a multi-stage exploit. The primary function of the embedded JavaScript is to exploit the CVE-2007-5659 vulnerability to download and execute a secondary payload, as indicated by the ClamAV detection of Pdf.Exploit.Agent-36062.

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` `0b8009102c306daf1a5966bc3af0abff5591c0d7dbb7306f953ff5daedaa0e7f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12618 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f52e134d3b7cf27a32e1c06055db2dd4c417f55364f87b4bcc8c3c894ca8380a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5198 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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