Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fad3102403ddc33…

MALICIOUS

PDF

184.4 KB Created: 2015-08-08 09:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ae933a7459b6decb2eb6bf6eb036ac75 SHA-1: 47fc79fc31f05944281254d4fa37e4849b60a656 SHA-256: 4fad3102403ddc338ee5954518714915dd96a8be9c6ebceef4330ca8a10548bc
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of a malicious link suggests a phishing or malware delivery 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=%D1%82%D0%B5%D0%BA%D1%81%D1%82+%D1%81+%D0%BF%D1%80%D0%BE%D0%BF%D1%83%D1%89%D0%B5%D0%BD%D0%BD%D1%8B%D0%BC%D0%B8+%D1%81%D0%BB%D0%BE%D0%B2%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383933_skachat_launcher_s_modom_divayn_rpg.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383798_knigi_na_francuzskom_yazuyke_chitat_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384270_spravka_zainteresovannosti_v_sdelke_ne_imeetsya_ooo_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024031.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24031 3556 bytes
font_01_sfnt_off00024db4.bin
f2a0e9c397192d1a653e5159d4f6d91d0132ed16a09756ebca170cca09c8eb61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DB4 14268 bytes
font_02_sfnt_off00027a5b.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A5B 14468 bytes
font_03_sfnt_off0002a50e.bin
b8f3762ba3822ecf31f800236e7ac023a48b0a8cf6f7ec225d56560be709960c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A50E 6584 bytes
font_04_sfnt_off0002b7d5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7D5 6084 bytes
font_05_sfnt_off0002c76a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C76A 3752 bytes

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