PDF / .COM malware analysis — malicious · 2bf020f2b06d75ac

MALICIOUS

PDF / .COM

21.0 KB

MD5: d985d75f9ad3fd412a168563de8daa3e SHA-1: 97c835b98b2ae76d86942a6a2d277183799fdaf8 SHA-256: 2bf020f2b06d75ac81d05189bd6e375d4de94fc3bde0b4a48c946c8ec8f1e0fc

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The critical heuristic firing for CVE_2009_0927 indicates exploitation of a known vulnerability in Adobe Reader. The embedded JavaScript, particularly the deobfuscated stages, contains multiple calls to eval() and unescape(), suggesting it is designed to download and execute a second-stage payload. The obfuscation techniques and the use of eval() are common in exploit kits targeting PDF readers.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `6a0b2e9266c31f5792888161ba1d406d8942d570904374052de406afa4e31693`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3389 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111712_001.js` `f6adab79c804f341b048b7acb9b3e119c1a0c5468fc568d8f825bf8212a182d1`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xF01	15980 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`javascript_obj111713_002.js` `c9860ad28766d13710dc3bafe2629bca31784972a274a488041ae02ced354240`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4DA3	1495 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `fe7ca5c1028e68542211c360d30953a4ec2fc8a09167f68f2d8f910da3a437ca`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xF01	1520 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `95d52c265d60ffad372da99bb3db5c3f0b48fc84b1aaa90902895f12786cdc82`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4DA3	99 bytes
`legacy_pdfkit_stage_002.js` `f33c52e41f84e78ccff9e320c547339cf7621bd0d0aa74d027b6959363b655c8`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xF01	1620 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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