Malicious PDF — malware analysis report

Static analysis result for SHA-256 f342b0bf14f7e77b…

MALICIOUS

PDF

369.7 KB Created: 2015-08-28 11:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c512ca897883f0b8183ee1f3382631f2 SHA-1: 5dea761e553e01cad953a60502c788b30aae4380 SHA-256: f342b0bf14f7e77b34131f4c6e90b0ec2d6df508b4a2fa94654d83c018777b3b
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a malicious redirector link to 'http://botcraftman.ru/'. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection 'Pdf.Dropper.Agent-9224034-0' indicates the file is a known dropper. The embedded URL is the primary indicator of a malicious intent, likely to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 3

  • 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-9224034-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9224034-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%BC%D1%81%D1%82%D0%B8%D1%82%D0%B5%D0%BB%D0%B8+%D0%B2+%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B5+mp4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802386_skachat__gta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802361_kak__perevesti__pechat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802419_skachat__maynkraft__s_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000580d6.bin
b4a0d1ce82172e253f36c19cf77b320ff3a62e11c733e40105508c85c400a2fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580D6 8188 bytes
font_01_sfnt_off0005987e.bin
85d6e6093ad54f691eb95dd83d18442f782704f45811b309ae369cbbb4d5540a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5987E 15124 bytes

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