Malicious PDF — malware analysis report

Static analysis result for SHA-256 f20d11be926edf72…

MALICIOUS

PDF

185.2 KB Created: 2015-07-23 23:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c8ddbf028dea2eccf2bb2c958bd9e981 SHA-1: 1cebe46dc2ce822947fec1b15221dec0615c5afb SHA-256: f20d11be926edf72d1debb410aeae27e7a0acfa6da3c3ec87878c47aed0d1ba0
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This indicates the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%B0%D0%BB%D0%B5%D0%B2%D0%BD%D1%8B%D0%B9+%D0%B0%D0%B8%D0%BC+%D0%BA%D1%84%D0%B3+%D0%B4%D0%BB%D1%8F+%D0%BA%D1%81+16&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185051_vuypusknoy_bal_v_11_klasse_scenariy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184630_skachat_chit_na_ks_1_6_aim_i_vh.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184901_ktp_s_uud_5_7_klass_izo_shpikalova.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002403e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2403E 3556 bytes
font_01_sfnt_off00024dc1.bin
387d891e6d29ee85093cd4c59bb5c83aeba16bf9758e35f162d60d8fac78cd44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DC1 14464 bytes
font_02_sfnt_off00027b19.bin
6ad92209ed666c1eba499cb9224221f2e0b6004fb74a3fe6c0b45da67ce7338f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B19 14468 bytes
font_03_sfnt_off0002a5cf.bin
e3734853d5250e9f882370c3ffee90bac73f9d9398c3caa8f0c2a50cf11d22bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5CF 7312 bytes
font_04_sfnt_off0002bb1d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB1D 6084 bytes
font_05_sfnt_off0002cab2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAB2 3752 bytes

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