Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f431985e6aadc40…

MALICIOUS

PDF

187.3 KB Created: 2015-07-23 20:36:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 6fb2be30defef35bb18d102c3d8d0c3f SHA-1: a1e7abd8cf902141fdd692262c986463da727c05 SHA-256: 6f431985e6aadc4014b8c495d26f7493fd5c52ac3045ef018396d42ab7acee6d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely used to lure users to a malicious site. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%84%D0%B8%D0%BF%D0%B8+%D0%BE%D1%82%D0%BA%D1%80%D1%8B%D1%82%D1%8B%D0%B9+%D0%B1%D0%B0%D0%BD%D0%BA+%D0%B7%D0%B0%D0%B4%D0%B0%D0%BD%D0%B8%D0%B9+%D0%B3%D0%B8%D0%B0+9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+2015+%D0%B3%D0%BE%D0%B4+%D0%BF%D0%BE+%D0%B3%D0%B5%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183179_lampovuyy_kombik_shema.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184495_uroki_po_russkomu_yazuyku_5_klass_laduyzhenskaya_fgos.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184456_gdz_po_obschestvoznaniyu_6_klass_bogolyubova_ivanova.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247f7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247F7 3556 bytes
font_01_sfnt_off0002557a.bin
5aa8bab05e6c706e8f4197d373f67d72fd36f24ac4ad913c530994064460abdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2557A 14268 bytes
font_02_sfnt_off0002824a.bin
e98a651a6ed7998c48a124877b6c823826e28cf8026a84dc8648ea3d3034fe4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2824A 14640 bytes
font_03_sfnt_off0002ad82.bin
341e246d47e1e5a3b8a5e5ace3b03612c4ec856f40f4f30f134a720d2d1e035b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD82 7436 bytes
font_04_sfnt_off0002c364.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C364 6084 bytes
font_05_sfnt_off0002d2f9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2F9 3752 bytes

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