PDF malware analysis — malicious · ab2f2100a1e6e601

MALICIOUS

PDF

12.3 KB

MD5: fe49b19614df7ee0225cc868a19dbea7 SHA-1: 48b33e19965ffe29ba20bb149571cc75e365f2db SHA-256: ab2f2100a1e6e60163b69cc7f93276f5caf019ef967d41d1c1d64d7869ad34f4

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious Link/URL

This PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. The analysis indicates that this JavaScript is designed to deobfuscate and execute further stages, likely downloading and running a second-stage payload. The presence of multiple deobfuscated JavaScript files suggests a multi-stage attack chain.

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` `82b401879b74961889d73a17e6c3a919b3cd7606720ec47282266b9de3cfbe30`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12072 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d9ef95bb98cf094d04884f2953c3eb094239c7cd02134839e1f2a1b39f0d16e1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4928 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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