Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb6c053ea4b8153…

MALICIOUS

PDF

189.7 KB Created: 2015-07-24 04:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bac36eafb88e76730f986d1d602c9281 SHA-1: 346fb089b52d4a79f7b6c295e1242e6715ceb1ab SHA-256: 1bb6c053ea4b8153720d2ca004ff64c64c86fa56916075fe23fc141a78d095c5
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is truncated and does not provide further context, but the presence of the malicious URL suggests a phishing or malware distribution attempt.

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%9E%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA%D0%B0+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B5%D0%B4%D0%B4%D0%B8%D0%BF%D0%BB%D0%BE%D0%BC%D0%BD%D0%BE%D0%B9+%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185484_avtobus_dobryanka_perm_170_raspisanie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185667_skachat_chituy_na_varfeys_bez_sms_i_aktivacii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187179_obrazec_zayavleniya_na_uderzhanie_nedostachi.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002529c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x2529C 3556 bytes
font_01_sfnt_off0002601f.bin
c1cedbfb85bd42099db194ca4a30754edbe54c625befa958df818dfa9f09a7d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2601F 14632 bytes
font_02_sfnt_off00028e34.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x28E34 14468 bytes
font_03_sfnt_off0002b8e7.bin
97d469029c1f0506e4d9eb1a470e0ba75f909a69e122599217e2d8682b035e58
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8E7 6972 bytes
font_04_sfnt_off0002cd0a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD0A 6084 bytes
font_05_sfnt_off0002dc9f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC9F 3752 bytes