Malicious PDF — malware analysis report

Static analysis result for SHA-256 931147c5e2398edb…

MALICIOUS

PDF

197.1 KB Created: 2015-07-23 21:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0f28c01371896d72417c1d385909d957 SHA-1: 1a3e3b9d62700d5e976bc7ca9f94a022b76acec5 SHA-256: 931147c5e2398edb0a55a93747f765b6d5791fa59f51e60b71c6ce233b1e54e4
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This heuristic firing, combined with the ML classifier's high confidence, indicates the document's primary purpose is to lure the user to this malicious site. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9782

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%B8%D0%B3%D1%80%D1%83+%D0%BC%D0%BE%D0%B9+%D0%B3%D0%BE%D0%B2%D0%BE%D1%80%D1%8F%D1%89%D0%B8%D0%B9+%D0%BA%D0%BE%D1%82+%D1%82%D0%BE%D0%BC+%D0%BD%D0%B0+%D0%BF%D0%BA+%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://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184887_skachat_x22_dlya_css_v34.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184709_master_of_orion_2_rus_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183259_primer_rascheta_strahovuyh_vznosov_2013.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027101.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27101 3556 bytes
font_01_sfnt_off00027e84.bin
cc0d76d59492285dd6b3059c1335c6a0a335e22d06f3d493e585fde12a32d437		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E84 14780 bytes
font_02_sfnt_off0002ac24.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC24 14468 bytes
font_03_sfnt_off0002d6d6.bin
26d7aee63586a2cfca6a07393d02b43e0256c2b752c7c6e54842da322a6d1a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6D6 6908 bytes
font_04_sfnt_off0002eac5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAC5 6084 bytes
font_05_sfnt_off0002fa5a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA5A 3752 bytes

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