Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda71042339a8868…

MALICIOUS

PDF

386.1 KB Created: 2015-08-22 08:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 33f314bc281738cb78d6758f55242b38 SHA-1: 6302f3836cd0e8ef6d0d08cbf1ae279eb7b81bd5 SHA-256: eda71042339a88681c431bb365686e0471f00ab747effb68dbc07339ab5ebf94
90 Risk Score

Malware Insights

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

The PDF file contains an embedded link to a known malicious redirector infrastructure. The link's keyword suggests a lure for downloading software, which is consistent with malicious PDF lures. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the primary malicious behavior is the redirection to a potentially harmful URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 2

  • 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.
  • 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+%D0%BA%D0%B0%D1%80%D1%82%D1%8B+%D0%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB+%D0%B4%D0%BB%D1%8F+windows+ce+60+2013+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674499_maykrosoft_ofis_2007_skachat_besplatno_bez_klyucha.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674511_arhikad_15_samouchitel.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674490_pezho_206_sedan_instrukciya_po_yekspluatacii_chitat_onlayn.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b948.bin
9daa027dffb94861ad6600494e1e50bd1d50841c9fb63ee2809700e58e255df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B948 9364 bytes
font_01_sfnt_off0005d3ce.bin
13fcca35111089f4fe6a7f014ebad27633a19f96da45c36ced59aa775d846e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3CE 17048 bytes

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