Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9cdfa7db6dbeb09…

MALICIOUS

PDF

350.4 KB Created: 2015-08-28 17:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3980964a087b8d1b188af4ab648a434a SHA-1: 56d6ac736e494b15ab94803a0410a1c5fe2aea07 SHA-256: b9cdfa7db6dbeb095305131d8de3fe9695118c73a37cce9a0dd289db1fe5da8c
158 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1071.001 Web Protocols

The sample is a PDF file identified by ClamAV as 'Pdf.Dropper.Agent-8794869-0'. It contains embedded JavaScript and a link to a known malicious redirector at 'http://botcraftman.ru/'. This combination suggests the PDF is designed to exploit vulnerabilities or trick users into visiting a malicious site, likely to download further malicious payloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Dropper.Agent-8794869-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8794869-0
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D0%B0%D0%BD%D1%82%D0%B8%D0%B1%D0%B0%D0%BD%D0%B5%D1%80%D0%BD%D0%B0%D1%8F+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809108_skachat__albomuy__gruppuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809151_gotovuye__prezentacii__power_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809138_korolek__ptichka__pevchaya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052dda.bin
943cb8be2f81b24213ab6ab3223e3e600eb54ff50ebfefea03ff53b8f5172be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DDA 9808 bytes
font_01_sfnt_off00054a0b.bin
390c6b6a5eee97c20f6fdf6f5e18545e1954ec705abb5390a0426b2f270f36e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A0B 15496 bytes

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