Malicious PDF — malware analysis report

Static analysis result for SHA-256 892987267f72c065…

MALICIOUS

PDF

184.6 KB Created: 2015-08-08 09:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c204a7342140120d2b77d2ed29177991 SHA-1: b67423d3714a97a8bae02aff69c9785303220067 SHA-256: 892987267f72c065f94d44eeee02d6c8d15157eae02295c2838ec3062f60a7b4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%B5%D0%BC%D1%8B+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+240+320&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383720_dogovor_s_rabotnikom_bez_oformleniya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383731_everything_at_once_lenka_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383825_vitafon_instrukciya_po_primeneniyu.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_off00023fb4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FB4 3556 bytes
font_01_sfnt_off00024d37.bin
8c46facdb6ba1becf1d9bbb791023a92eb61a7ef8a26d6a24ce06f45b6c51cf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D37 14516 bytes
font_02_sfnt_off00027a3d.bin
a31bbe461442f77d7a3d6f6e2e2978a7bcd2b556a86a5b34e850f0b19ee3e4c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A3D 14468 bytes
font_03_sfnt_off0002a4e5.bin
132b17d36e9d9c7b94ad63988fe49b1f8a84afd7e5019902fc0e6edf7802d0a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4E5 6792 bytes
font_04_sfnt_off0002b886.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B886 6084 bytes
font_05_sfnt_off0002c81b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C81B 3752 bytes

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