PDF malware analysis — malicious · 7ca5744db5b2cd3a

MALICIOUS

PDF

12.1 KB

MD5: c1606054767913659210676bf7fc943e SHA-1: 7bad2fcacd68cea8cf40de5cab5bfd2be6201c86 SHA-256: 7ca5744db5b2cd3a138d7bfcea6a0ff7a31e8d0871f87d08f450316f8c0fa706

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, triggered by the CVE-2007-5659 vulnerability. The heuristics indicate that this JavaScript is used to collect information and likely download and execute a second-stage payload, as evidenced by the extracted JavaScript files 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'. The exact behavior of the script is not fully discernible due to obfuscation, but the overall pattern suggests a downloader or initial access exploit.

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` `fd88827a33f5089d48b850898d836450ab0d0c0c46ae97016b13320dbd8a6d6d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12015 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5993d994fdfca7f063eb5a9ebb5b4f584f287271d1f372be6c0f2533503073ae`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4892 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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