PDF malware analysis — malicious · f4042fbff4246438

MALICIOUS

PDF

11.9 KB

MD5: a2e4c4682b2475620cc5f5adbf8b63db SHA-1: 1720f765db2e25e90f0816cd5437fd4a44f38d69 SHA-256: f4042fbff4246438a13cb9086557a76325a1baea7aa2fabdf478e7df0f516292

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability. The heuristics indicate that this JavaScript is used to launch further stages, likely for downloading and executing additional malicious content. The presence of deobfuscated JavaScript files suggests a multi-stage attack. The ClamAV detection further confirms its malicious nature.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `5d0d536cc57fb4b83939b3c81af3990117c0be7067736a3f45479a35668e0188`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `12e7298af2851f1261ce08afb9291c658fd73a0d7229ee9a1938ca4e3722bf26`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4981 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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