Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a1987da6d5308d…

MALICIOUS

PDF

187.2 KB Created: 2015-07-26 04:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bc782bc71377a4f09a3e451c6dd8f31b SHA-1: dd264450cbf098e7b5989dfd97f51498d194bc53 SHA-256: b1a1987da6d5308d3eded91c3d393d76e75c796cf0fa73b291cb235e7f38bda6
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful website. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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%92%D0%BE%D0%BF%D1%80%D0%BE%D1%81%D1%8B+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BD%D0%B0+%D0%BA%D0%BE%D1%82%D0%BE%D1%80%D1%8B%D0%B5+%D0%B4%D0%BE%D0%BB%D0%B6%D0%B5%D0%BD+%D0%B7%D0%BD%D0%B0%D1%82%D1%8C+%D0%BA%D0%B0%D0%B6%D0%B4%D1%8B%D0%B9+%D1%87%D0%B5%D0%BB%D0%BE%D0%B2%D0%B5%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184530_olimpoks_programma.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4212/4212447_megafon_modem_3g_skachat_programmu_dlya_vuyhoda_v_internet.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185255_veb_kamera_sven_10_x_digital_zoom_megapixel_drayver.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002490f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2490F 3556 bytes
font_01_sfnt_off00025692.bin
106bd9cad6f443c9e0e38d5bc8238e741e1c9bd27e236a3e99c94af330567643		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25692 14636 bytes
font_02_sfnt_off0002840c.bin
3bf22fb4c8c830365f5b8f5e07e560899b7e360413c1b05418b3fece9d392c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2840C 14680 bytes
font_03_sfnt_off0002aed4.bin
3f14d2e4a3a6d71a6ab91aa5508e37a39b3f7591b80e375bba44e4df11c45990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AED4 7036 bytes
font_04_sfnt_off0002c324.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C324 6084 bytes
font_05_sfnt_off0002d2b9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2B9 3752 bytes

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