PDF malware analysis — malicious · cd4b494c26527cc2

MALICIOUS

PDF

12.4 KB

MD5: b4b87d625c61a14861c9fe0c96dded3c SHA-1: e67c54b29f98e461de8b4eef8351d71878fe967b SHA-256: cd4b494c26527cc22713d6a70d68267f067ab94fc80cf4921e5407df3c4cb12a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. A critical heuristic, CVE_2007_5659, specifically points to the exploitation of a vulnerability using `collab.collectEmailInfo` to execute JavaScript. This JavaScript is further broken down into stages, indicated by the extracted files `legacy_pdfkit_stage_000.js` and `legacy_pdfkit_stage_001.js`. The overall intent appears to be the execution of malicious code via a PDF exploit, likely leading to further stages of infection.

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` `f3447d8372ee78f39ee09d6785d30f14eb79bbba5082efa2b525e874eaae6b2e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12069 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e1e5e0183882ee8096de038ea9c5489b2e4ffae377f44f3a88064fc05de79eb5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4970 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.