PDF malware analysis — malicious · 9c5cc14fd56f745b

MALICIOUS

PDF

57.2 KB Created: 2011-01-14 00:19:18 +02:00 Authoring application: http://google.wiki.usfca.edu/ (via mPDF 5.0)

MD5: eaebe4a8dca9860021f1d764fc788507 SHA-1: 9bef25fc8670fbec0df4ca8ac35bf991cc1e357d SHA-256: 9c5cc14fd56f745b87efbe7be99456e6b1e8b13153aa7104195daa1a9959b69c

68 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged as malicious by an ML classifier and contains embedded JavaScript. The JavaScript stream, named 'javascript_obj0036_000.js', is likely responsible for executing malicious actions. While the exact payload is not fully discernible from the provided evidence, the presence of obfuscated JavaScript within a PDF is a strong indicator of a malicious document designed to exploit vulnerabilities or deliver further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.8927

Heuristics 3

Suspicious extracted artifact medium 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.
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.

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0036_000.js` `a2620a0be21a26956e8296a3c8163c8c260cb6a920586f15a19c6e170ac30940`	pdf-javascript-stream	PDF /JS object 36 at offset 0xDD41	136 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).
`stream_003_off000021cf.bin` `437e8307aac6c3b8b7b807c0acf04095a3b8019ee140053cae5abd55808e7b28`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x21CF	18176 bytes
`font_01_sfnt_off000050f5.bin` `a8ed3909966b10c026f46212f55dce68c94667ce1ac039797d3ebfa1d644dacf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x50F5	17892 bytes
`font_02_sfnt_off00007f35.bin` `4ee4e439b16220e78b319060a3d86ba95cd4b8614522dd4fa1d4df274793c516`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F35	18720 bytes
`font_03_sfnt_off0000b1c2.bin` `e3eeacc5b1f780160b253f248c40fb29e5cb6416f62dd9413712ea70c37f26c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB1C2	18756 bytes

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