Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc53f4cce43f605…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 00:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 048b3ffe53685b7c04f9f9cce6eec3e4 SHA-1: ff38ead5eee5e11562b368ad4ea23c312963df02 SHA-256: bfc53f4cce43f6056d965d2b05cb404322cbded3f7c3c7927d7efccc528584da
90 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/?lip&keyword=%D1%81%D0%BC%D0%B0%D0%B9%D0%BB%D0%B8%D0%BA%D0%B8+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5+%D0%BA%D0%BE%D0%B4%D1%8B+%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0&charset=utf-8, is the primary indicator of malicious intent. No scripts were extracted, and the document body was not sufficiently readable to determine a specific lure.

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%81%D0%BC%D0%B0%D0%B9%D0%BB%D0%B8%D0%BA%D0%B8+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5+%D0%BA%D0%BE%D0%B4%D1%8B+%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185120_kalkulyaciya_sebestoimosti_produkcii_blank.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185214_skachat_gugl_hrom_poslednyuyu_versiyu_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185253_skachat_besplatno_programmu_vk_vzlom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242c6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242C6 3556 bytes
font_01_sfnt_off00025049.bin
b2eeb396851acf1ddcceb5d57dead795ec68688ba8c3edde502f72c98b08a0f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25049 14480 bytes
font_02_sfnt_off00027e17.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E17 14468 bytes
font_03_sfnt_off0002a8ca.bin
4e4a248e7c558d798c41d8518588b0b8233f215c0c3cb5faf4757b5affdc704f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8CA 6672 bytes
font_04_sfnt_off0002bbd7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBD7 6084 bytes
font_05_sfnt_off0002cb6c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB6C 3752 bytes

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