Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6da8e87992ec1a…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 04:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fdf1cbf72b520e5212f685f6d9e58b94 SHA-1: 10c43de7f66deb492c830ab57528437cff2c8cba SHA-256: 9c6da8e87992ec1af0ed3ab70c8ef17ac6fc0721bd60f85c8f1b8f1d6ca2ecdc
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a known malicious redirector. No scripts were extracted, but the presence of a malicious link suggests the document is designed to lure the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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-8788619-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8788619-0
  • 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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B1%D0%BE%D1%80%D0%BA%D1%83+%D0%BC%D0%B0%D0%B9%D0%BD+%D0%BA%D1%80%D0%B0%D1%84%D1%82+1+7+4+%D1%81+%D0%BC%D0%BE%D0%B4%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183261_deesposobnost_fizicheskogo_lica_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185095_svinka_peppa_skachat_besplatno_na_russkom_yazuyke.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184448_rezultatuy_egye_po_matematike_2015_rostovskaya_oblast.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246de.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246DE 3556 bytes
font_01_sfnt_off00025461.bin
116622b196ffbe69df68e34a2b88665ced139284241eddc736e02174d60712c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25461 14436 bytes
font_02_sfnt_off000281a6.bin
a4ca4ddb7cf2e36c8f40541087c5634acfbb2ee46a2b60deaaa4f8e3ed35759d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281A6 14512 bytes
font_03_sfnt_off0002ac89.bin
234f9aa922985b112289f37f9bca00c5df599835d3b81b8346cbb8837ff3f6af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC89 6956 bytes
font_04_sfnt_off0002c0c6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0C6 6084 bytes
font_05_sfnt_off0002d05b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D05B 3752 bytes

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