Malicious PDF — malware analysis report

Static analysis result for SHA-256 5917c1e2f8f4c136…

MALICIOUS

PDF

188.4 KB Created: 2015-07-26 06:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d54c6aea40b2b1266b8d296c3c363a03 SHA-1: 53a4cfa28762dbba30c5bb8cfa76dbc282afa7de SHA-256: 5917c1e2f8f4c1362120df3e310079dcccd61ea1a15e56f035a642fb23cedacc
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. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be luring the user to the malicious URL, which is likely hosting a phishing page or distributing further malware.

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%BF%D1%83%D1%82%D0%B5%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B0%D0%B3%D0%B5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186362_anatomiya_silovuyh_uprazhneniy_skachat_epub.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189871_obnovit_vindovs_7_domashnyaya_bazovaya_do_maksimalnoy_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192211_ustinova_kovcheg_marka_skachat_besplatno_fb2_bez_registracii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b26.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B26 3556 bytes
font_01_sfnt_off000258a9.bin
0840b85a5da23e7d174a74c0cdaee1ed2855a616c41ba8321c64feebd5f13241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258A9 15136 bytes
font_02_sfnt_off000287ef.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x287EF 14468 bytes
font_03_sfnt_off0002b2a1.bin
e383bdf9b11ab5c98f46ed84557e168c86ff6f2a67ddefd1520275e6bb3f912f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2A1 7224 bytes
font_04_sfnt_off0002c7bc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7BC 6084 bytes
font_05_sfnt_off0002d751.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D751 3752 bytes

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