PDF malware analysis — malicious · 7b1da815c3c7183e

MALICIOUS

PDF

12.2 KB

MD5: d2d9b8d4aab98f039613153c3cea77db SHA-1: 7c0a7994e908fa1b2047fe6f7786357b177e0729 SHA-256: 7b1da815c3c7183e8d2e94214f3448e3d8a97165dfad4405c295765e664b4e9d

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 as malicious. Specifically, the CVE-2007-5659 heuristic indicates the use of the 'collab.collectEmailInfo' function to execute JavaScript, which is a known technique for exploiting PDF vulnerabilities. The presence of deobfuscated JavaScript files further supports the execution of malicious code. The file is detected by ClamAV as Pdf.Exploit.Agent-36065.

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` `e99bfd8ec2137da263ff0ba514d99c6f1de538c8e3d54f410a855920e8562a4f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12477 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `9ddafaf92743d6f78f143ede8c9d076856b91fa498a0db3c3e49acdc3ceebf31`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5184 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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