Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19ab16f7f472c59…

MALICIOUS

PDF

186.6 KB Created: 2015-08-08 09:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: db6a651c2b2612c5b71458402498c687 SHA-1: f0540894f4f4d75e345eba68b660fd2b8e5ec7b7 SHA-256: e19ab16f7f472c59da32cd9594dab66dd2002f83161d8a1d861dd2777544ad26
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to deliver a secondary payload or conduct phishing. No scripts were extracted from this sample.

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=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BB%D0%B5%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5%D0%BC+%D0%B7%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%BE%D0%BC+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384163_skachat_drayvera_dlya_hama_ac_140.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384254_antivirus_avast_skachat_besplatno_probnuyu_versiyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384025_skachat_launcher_maynkraft_mixservers.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024603.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24603 3556 bytes
font_01_sfnt_off00025386.bin
6dbc3fee142812dbc5e30d10cadc95aef379fb0e0e25f4f8061ac48051d21a82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25386 15224 bytes
font_02_sfnt_off0002823a.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2823A 14468 bytes
font_03_sfnt_off0002ace9.bin
b79c070dca45f1f955487db6b50e04c8002be0c087ae9cafce6ef9e9878a63a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACE9 6784 bytes
font_04_sfnt_off0002c07a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C07A 6084 bytes
font_05_sfnt_off0002d00f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D00F 3752 bytes

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