Malicious PDF — malware analysis report

Static analysis result for SHA-256 9943b81ad8e19bb9…

MALICIOUS

PDF

184.3 KB Created: 2015-07-23 20:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a17ca6a1cb60f24bdb44c762c176858f SHA-1: 92fe287006e271fe083195829b78ebfcabd2ad92 SHA-256: 9943b81ad8e19bb99d7a6b5ed197cae0057bab9948ec21f44ae25b95622d3a7e
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful website.

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%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B5+%D0%B2+%D0%BF%D1%80%D0%BE%D0%BA%D1%83%D1%80%D0%B0%D1%82%D1%83%D1%80%D0%B5+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183192_kusudama_roza_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183200_lampovuyy_peregruz_shema.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184284_skachat_besplatno_vzlomschik_igr_alavar.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f36.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F36 3556 bytes
font_01_sfnt_off00024cb9.bin
d30b84927e8f9a8c77763f97a3744408e9d009384c11c8aa9824f38da7d3de24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB9 14264 bytes
font_02_sfnt_off000279ac.bin
0d510f439a73eae665af138ecef4372c9b1dc55d02d5656a9604ccfb30fc5e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279AC 14640 bytes
font_03_sfnt_off0002a4df.bin
278b6d93fc8109b43c057b1c0100dfc76f83aa75df2243075f6db49e5f068a7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4DF 6512 bytes
font_04_sfnt_off0002b777.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B777 6084 bytes
font_05_sfnt_off0002c70c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C70C 3752 bytes

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