PDF malware analysis — malicious · 92cf93a287ecca59

MALICIOUS

PDF

92.8 KB

MD5: e8b3cc72f2782201ec547a93071010ff SHA-1: 453f12fb75a340096687bda483160b984737081d SHA-256: 92cf93a287ecca59c269e81ffcf3ee4976148382909411b718697f25a27c744b

260 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The heuristics indicate that the JavaScript is obfuscated and likely used to download and execute a second-stage payload, as suggested by the ClamAV detection 'Pdf.Exploit.Agent-36307' and the presence of a deobfuscated JavaScript file. The document body text appears to be garbled, further supporting a malicious intent rather than legitimate content.

Heuristics 7

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36307 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36307
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `dbc208994e94206eb0801aa0bd2d7d037fdb40617e608932bf30e5809bb85e2a`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3066 bytes
`legacy_pdfkit_stage_000.js` `9e9f3a913776686c5e2154271c9ce69d23d97678104335b76569d4a40528c5fb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xE15	6078 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).

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