PDF malware analysis — malicious · 3006fc20d71da133

MALICIOUS

PDF

69.8 KB

MD5: ec0241e74b97755f6eed6410760da71f SHA-1: 416f03da4a35ab8c18a493e5b5667d431bcf74af SHA-256: 3006fc20d71da1335daa9a98da850a9c9659f1af609ebdc43bab781cf1016a4d

260 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages multiple critical vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) related to PDF object handling. The heuristics indicate that this JavaScript is used to concatenate and evaluate strings, a common technique for obfuscation and payload delivery. The ClamAV detection of 'Win.Trojan.Agent-36170' further confirms its malicious nature. The primary function appears to be the execution of a second-stage payload, as suggested by the 'legacy_pdfkit_stage_000.js' artifact.

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: Win.Trojan.Agent-36170 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36170
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` `13f5060e093d14cef2512ae1e3b3060782f579d6c6c86eb00e33ffa4f0dafc43`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	1667 bytes
`legacy_pdfkit_stage_000.js` `b3946b2ddc63088c6f3dd2475defc6cbc67da06b3edc138ef80f0c2c1cfe81dc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x89E	4596 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s).

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