PDF malware analysis — malicious · 8b6a48bdbdac093a

MALICIOUS

PDF

39.2 KB Created: 2011-02-12 15:00:20 +02:00 Authoring application: Military Travel Loans (via mPDF 5.0)

MD5: 586953142953f6c9ef805d95558ffaaf SHA-1: f4e3bf3f4a90ac8ed66bff7b72523908d915aa81 SHA-256: 8b6a48bdbdac093a63def39c03c1048ca1458a7460fed98214b137fc970dea93

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_UNESCAPE heuristic and the 'Suspicious extracted artifact' finding suggest obfuscation techniques are being used within the JavaScript. The extracted JavaScript files, 'javascript_obj0027_000.js' and 'javascript_obj0027_001.js', are likely responsible for executing malicious actions, such as downloading further payloads or exploiting vulnerabilities. Due to the obfuscation and lack of specific IOCs like URLs or hashes within the provided evidence, the exact behavior and family remain uncertain.

Heuristics 4

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0027_000.js` `357d06d70777f397a54fd04180a5ee36f36a8ec5c7cbbafdfab41f20901b25ac`	pdf-javascript-stream	PDF /JS object 27 at offset 0x9522	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).
`javascript_obj0027_001.js` `607a0753f2d28ea7a383d2e729ee9a1eeb69db22eafb74fa3e1d444ae047c123`	pdf-javascript-stream	PDF /JS object 27 at offset 0x9522	134 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).

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