Malicious PDF — malware analysis report

Static analysis result for SHA-256 091835eae7ec8fc2…

MALICIOUS

PDF

353.3 KB Created: 2015-08-25 15:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 7a878e31b48c5fc553ffc8b29a5eae14 SHA-1: d6868a677bfeb04056b6393c17e630f377455c60 SHA-256: 091835eae7ec8fc232242a5d0b0bcf0ed5c59860847a7c68c9d017f7356831c8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged the document as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the critical heuristic firing strongly suggest a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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%BF%D1%80%D0%BE%D1%82%D0%BE%D1%82%D0%B8%D0%BF+1+%D1%80%D1%83%D1%81%D1%81%D0%BA%D1%83%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731797_bolshoy__slovarspravochnik__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731604_vuykroyki__odezhduy__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731863_skachat__pesennik__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005411a.bin
feb7eea80cd13bdc2b17045c709ec0f32d353f189d1cb420e71930c344e1cb26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5411A 8920 bytes
font_01_sfnt_off00055a51.bin
9dda792025796433873bc54ecd9b076673ef98323e22d9cb22a61e3f862006da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A51 13576 bytes

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