Malicious PDF — malware analysis report

Static analysis result for SHA-256 7894faf6480725a8…

MALICIOUS

PDF

194.4 KB Created: 2015-07-24 04:28:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: af1b2867b1f05aa6219d6432b665f6e6 SHA-1: 08ddf09e4f38c2fb1bd3267fe8a2f9e6425539d5 SHA-256: 7894faf6480725a8a303f0d6006f60a954efa342cb241333ebf5e96a48c7701d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be directing the user to the malicious URL, likely to host a phishing page or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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%D0%B4%D0%B4+%D1%81%D0%B8%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+%D0%B2%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+2015+%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+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188045_skachat_besplatno_knigu_po_remontu_na_nissan_kub_z10.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187632_dnevnik_po_proizvodstvennoy_praktike_farmacevta.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188116_aide_pdf_to_dxf_converter_skachat_besplatno_na_russkom.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_off000263a6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x263A6 3556 bytes
font_01_sfnt_off00027129.bin
e46e8a99f467d055065c3f13a1fa74f774084d9d235deb36d927afc418509365
pdf-font-stream PDF embedded font (sfnt) at offset 0x27129 14640 bytes
font_02_sfnt_off00029ecb.bin
c98746c72ba12093553cfdc9610d640a14d01e0355ff21fb1202a3b042283a69
pdf-font-stream PDF embedded font (sfnt) at offset 0x29ECB 14640 bytes
font_03_sfnt_off0002c9ff.bin
1d0e21c3bf9cdcf4a5832e1b27601b00027c23d7453457acd4d5a97512ea6848
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9FF 7456 bytes
font_04_sfnt_off0002dff4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFF4 6084 bytes
font_05_sfnt_off0002ef89.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF89 3752 bytes