PDF malware analysis — malicious · c7e11de1ee16ead2

MALICIOUS

PDF

12.1 KB

MD5: cfff9ce7dbcd977123fa4267ed7ecd86 SHA-1: cffec43ad709fa4db5c6e16451cdacd9b5a245e7 SHA-256: c7e11de1ee16ead25d1bedad4c5a37d7d994589e7fdf864e38b5253c01056e3e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by heuristics as potentially malicious and obfuscated. Specifically, the 'CVE_2007_5659' heuristic indicates the use of a known exploit targeting Adobe Reader. The embedded JavaScript streams, particularly 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', are likely responsible for executing the exploit and downloading further malicious content. The presence of these elements strongly suggests an attack pattern aimed at exploiting PDF vulnerabilities for initial compromise.

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `6f60a1053baafdc578f85eae84a2dc6d16775fbd66240d82cbfb7b4f4ff4e90a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	295 bytes
`legacy_pdfkit_stage_000.js` `42b0bcda9730e559d5cb58ed6d99977ee6d28e6b6776b2137de9f1d6f9ca798b`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x2E9	5235 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `3b3ce5fa788af8077730fb82df354221992c503aa57a59d157fbca0b38b57b57`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2E9	12356 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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