PDF malware analysis — malicious · 8ecb38f0204bfb0d

MALICIOUS

PDF

40.5 KB Created: 2012-07-11 23:15:27 +04:00 Authoring application: Sourceforge.net (via mPDF 5.0)

MD5: ccf77ddc1a2c8a3d25c3c2e7a63d0e82 SHA-1: f5154f44f2484307f094ff84a5f06eb007396211 SHA-256: 8ecb38f0204bfb0dada2a7ac014790ff7b902374477a264891d52edff6bc330e

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier strongly flags this PDF as malicious. An extracted JavaScript file, 'javascript_obj0029_000.js', was also identified with obfuscation indicators. The presence of JavaScript actions and streams within a PDF is a common technique for delivering malicious payloads, often exploiting viewer vulnerabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0029_000.js` `cd6097ae9725eedeb8d68162b4d969180785ce4cb6006439670b9637b33de890`	pdf-javascript-stream	PDF /JS object 29 at offset 0x9A40	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_off00001245.bin` `ded1520fd68b91798ef4502ba393be29e6762be445da6319489229b957e57958`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1245	17756 bytes
`font_01_sfnt_off00004057.bin` `a8ed3909966b10c026f46212f55dce68c94667ce1ac039797d3ebfa1d644dacf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4057	17892 bytes
`font_02_sfnt_off00006e97.bin` `4ee4e439b16220e78b319060a3d86ba95cd4b8614522dd4fa1d4df274793c516`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E97	18720 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.