Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ee8acbeb0a3ba7…

MALICIOUS

PDF

184.1 KB Created: 2015-07-24 00:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: aa3777374f5b8259b38b7d941bffffc8 SHA-1: dae794babbe66726aa299e03e6f550bcc7de51dd SHA-256: 58ee8acbeb0a3ba7f32274f835db6c50044485c7c1b602cb18973b4708efbbf1
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, botcraftman.ru. This indicates an attempt to lure the user to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

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%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%B4%D0%BB%D1%8F+windows+7+enterprise&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186382_dayz_standalone_skachat_torrent_na_russkom_piratka.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184412_i_exam_ru_testirovanie_otvetuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185660_wifibrutepro_exe.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2f2.bin
c733898188cf1733dd464e337c7a252a6e062dedbaf7728f30f191ee3310bd92		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2F2 6820 bytes
font_00_sfnt_off00023b62.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B62 3556 bytes
font_01_sfnt_off000248e5.bin
6243c5f389ca4931ce3ef5c52fd352e8367300f61bee2e77282db9f6af8a385e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248E5 15064 bytes
font_02_sfnt_off0002776e.bin
4b65aa7d68f38724dce738cce11ce742f65688cdb46b673c09459f1d63be59c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2776E 14696 bytes
font_04_sfnt_off0002b696.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B696 6084 bytes
font_05_sfnt_off0002c62b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C62B 3752 bytes

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