Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f4086893454fc6…

MALICIOUS

PDF

185.5 KB Created: 2015-08-08 09:33:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a335c6432b6e11565efe4c3cb4280dc8 SHA-1: 54301b050cf405201e4b48d5da1b89b379020c73 SHA-256: 95f4086893454fc618e0feaf1729d0a104eb9d5bfd0264f92835ccafa950a4c0
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as malicious infrastructure. This suggests the document is designed to lure users 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=%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%BE%D0%B2+%D0%BE%D0%B7%D0%B5%D1%80%D1%81%D0%BA+%D0%B5%D0%BA%D0%B0%D1%82%D0%B5%D1%80%D0%B8%D0%BD%D0%B1%D1%83%D1%80%D0%B3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383786_audiokniga_bezhin_lug_slushat_onlayn.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383726_yemulyator_androida_na_pk_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383722_skachat_tv_tyuner_dlya_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243a3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243A3 3556 bytes
font_01_sfnt_off00025126.bin
7c18b4ccff3c10753958186dcdac99be6f50ec9b5357d534d288330bdb7e44ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25126 14484 bytes
font_02_sfnt_off00027e90.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E90 14468 bytes
font_03_sfnt_off0002a943.bin
e35c8bb41ffc2d273362cbb8e7ab6c8326595263e82a1f9aadb452385ba347cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A943 6616 bytes
font_04_sfnt_off0002bc27.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC27 6084 bytes
font_05_sfnt_off0002cbbc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBBC 3752 bytes

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