Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa7545ce83f35cd…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 20:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 980ed6e245f60658871fbff92cd1a4bb SHA-1: 7a1bd4ba7eb183a754090812994cb62184a40557 SHA-256: 1fa7545ce83f35cdf228d40e64f8cfe2d19aaf8da3e13853e2aa4744a015d4ab
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a critical finding for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a 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-8786011-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786011-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D1%80%D0%B0%D0%BD%D1%81%D1%84%D0%BE%D1%80%D0%BC%D0%B5%D1%80%D1%8B+%D0%BF%D1%80%D0%B0%D0%B9%D0%BC+4+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184420_soni_vegas_pro_11_skachat_besplatno_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184505_kak_postroit_besedku_svoimi_rukami_chertezhi_i_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184400_kallanetika_s_ekaterinoy_ruykovoy_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002462c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2462C 3556 bytes
font_01_sfnt_off000253af.bin
1f3e4bb06651317ab56ca7d0c264e26cd4b5e856dc55935ec077d430f915af5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253AF 14504 bytes
font_02_sfnt_off000280f9.bin
67d53b5d93f9c1a2a208a20cc40158f0d1b9c29be983670d6b7c684d37a817b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280F9 14468 bytes
font_03_sfnt_off0002aba9.bin
28d2d6be91ada9e2c6c56a44d5a44c185aca0beeca3cda1613b90b25fecd4a2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABA9 6868 bytes
font_04_sfnt_off0002bf83.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF83 6084 bytes
font_05_sfnt_off0002cf18.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF18 3752 bytes

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