Malicious PDF — malware analysis report

Static analysis result for SHA-256 0273d394395b375d…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 07:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3d117a6e188fe218feb29506dede32d2 SHA-1: dc9e95c533e33d465aaf820993edfea0dcd47675 SHA-256: 0273d394395b375d29f0726aaa4fd72c8dddb8136f547639b2925e2a1f9802b5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to botcraftman.ru, which is likely used to host a malicious payload or phishing page. No scripts were extracted, but the presence of a malicious redirector 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%B2%D0%B5%D0%BB%D0%B8%D0%BA%D0%BE%D0%BB%D0%B5%D0%BF%D0%BD%D1%8B%D0%B9+%D0%B2%D0%B5%D0%BA+1+%D1%81%D0%B5%D1%80%D0%B8%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186425_skachat_standartnuye_igruy_na_windows_xp.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187661_pasport_truboprovoda_obrazec_zapolneniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184748_spravochnik_lesoustroitelya_n_n_gusev_zip.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002470d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2470D 3556 bytes
font_01_sfnt_off00025490.bin
dd8953ded31a8356d90f1a94ade26240ef77a5e6b0fc2aed5784c69ab1db3145		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25490 15116 bytes
font_02_sfnt_off000283e2.bin
b1e1cc546f0f1eacb0fa825f4ffec9a121aa6720056131ecd420011035d35d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283E2 14680 bytes
font_03_sfnt_off0002aea8.bin
bad72d32f61d431d9c8e758a19c2eb74291994bc1b3a2a8d1fc9096f3cb19b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEA8 6864 bytes
font_04_sfnt_off0002c253.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C253 6084 bytes
font_05_sfnt_off0002d1e8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1E8 3752 bytes

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