PDF malware analysis — malicious · 2e7b79c5bd17c682

MALICIOUS

PDF

12.3 KB

MD5: aa4acd655d8330cb1c5b2476fb49a99a SHA-1: 4adb7cab5231e186c8de320d3cff45824e8fe6d8 SHA-256: 2e7b79c5bd17c682dc0e9fbddde87a9fc456606953f16b8a9546ba96624b4520

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV (Pdf.Exploit.Agent-36062). Heuristics indicate the exploitation of CVE-2007-5659 via JavaScript, which is used to collect information and likely execute further stages. Two deobfuscated JavaScript files were extracted, suggesting a multi-stage download and execution process.

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` `6532961d84295c621e0d1eb353be40056156dec2a1c6d1e1da78bf833b08b5c5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11918 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `726ae94ba3d6ab46e0dbd2f36daa562daa914b944f476068d492282787207dbc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4905 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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