Malicious PDF — malware analysis report

Static analysis result for SHA-256 db99d941f0c569c2…

MALICIOUS

PDF

186.1 KB Created: 2015-08-08 09:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c8ef4606f67a573c33bec486f987abad SHA-1: b9d6ceb9dea1d1ae6688dbb6da6cdce27352079e SHA-256: db99d941f0c569c26087460251cfb41b57d73276181d6d756bec2831db13f022
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent. No scripts were extracted, but the presence of a malicious link suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=50+%D0%BE%D1%82%D1%82%D0%B5%D0%BD%D0%BA%D0%BE%D0%B2+%D1%82%D0%B5%D0%BC%D0%BD%D0%B5%D0%B5+%D0%B0%D1%83%D0%B4%D0%B8%D0%BE%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384350_irlandskiy_yazuyk_samouchitel.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384481_olimpiaduy_po_nemeckomu_yazuyku_20152015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4232/4232304_dnevnik_samokontrolya_diabetika_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244e2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244E2 3556 bytes
font_01_sfnt_off00025265.bin
c9e18556677826b02f3bb5df75f940cb38385e5010ed78f67d9f77eef190d76a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25265 14676 bytes
font_02_sfnt_off00028072.bin
b58a3f65a835e51878bc626920fee102a076d2956e33c3b4835bdd8620330d8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28072 14640 bytes
font_03_sfnt_off0002aba8.bin
20c39adadc015428d31efd809535f5c2a80b30062eca7a644be4923a1145d9db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABA8 6632 bytes
font_04_sfnt_off0002beb8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEB8 6084 bytes
font_05_sfnt_off0002ce4d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE4D 3752 bytes

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