Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a078d2e4c0aa61…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 08:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e00e076827a34f3f62b74c04ac82b7c3 SHA-1: d2f5c18e3b270dd7cb7d9c7145f9859c0057e967 SHA-256: f3a078d2e4c0aa61e5c1ecd8bdcb2530665c8992f673bfa14b9a7d71ac3a0310
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection indicates this is a known dropper. The primary attack vector appears to be a malicious link embedded within the document, likely intended to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8790389-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790389-0
  • 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%BA%D0%B0%D0%BA+%D1%81%D0%B4%D0%B5%D0%BB%D0%B0%D1%82%D1%8C+%D1%84%D0%BB%D0%B5%D1%88%D0%BA%D1%83+%D0%BE%D1%81%D0%BD%D0%BE%D0%B2%D0%BD%D0%BE%D0%B9+%D0%BF%D0%B0%D0%BC%D1%8F%D1%82%D1%8C%D1%8E+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184486_skachat_gta_san_andreas_bez_modov_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189051_adobe_flash_player_dlya_windows_mobile.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184930_shemuy_vuyshivki_krestom_besplatno_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024439.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24439 3556 bytes
font_01_sfnt_off000251bc.bin
c499883bb7e351700567243d55b31878d191a909ccfaf96287d0bbcb992ce131		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251BC 15148 bytes
font_02_sfnt_off00028079.bin
6c804e475f52a6b16891c88f33cd8502b24a505cd7a761e1ef2ee2043b3626fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28079 14520 bytes
font_03_sfnt_off0002ab47.bin
f59b0bf3b60a51ff84994bb42c6854731592025202a77a4ea8a0f72e83508d20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB47 7264 bytes
font_04_sfnt_off0002c05d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C05D 6084 bytes
font_05_sfnt_off0002cff2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFF2 3752 bytes

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