Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d4d70d3c25ca27…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 20:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 16ae4e190d5f8fea4777db53cbe9c667 SHA-1: dbb899dc32f3b94d6cd236acaa3b22758b89eec4 SHA-256: a2d4d70d3c25ca271485f9b4464a540a570d1bb5f3da8474b605a4409ade5682
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary IOC is the malicious URL, which is likely used to direct users to a harmful destination. No scripts were extracted, and the document body was not readable.

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%84%D0%B8%D0%BF%D0%B8+%D0%BE%D1%82%D0%BA%D1%80%D1%8B%D1%82%D1%8B%D0%B9+%D0%B1%D0%B0%D0%BD%D0%BA+%D0%B7%D0%B0%D0%B4%D0%B0%D0%BD%D0%B8%D0%B9+%D0%B3%D0%B8%D0%B0+%D0%BF%D0%BE+%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184375_pasportnuyy_stol_yurga_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184486_skachat_gta_san_andreas_bez_modov_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184400_kallanetika_s_ekaterinoy_ruykovoy_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024522.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24522 3556 bytes
font_01_sfnt_off000252a5.bin
1e86efea5450d9c39ed0b8a5f8af6193c1589bb7ad890497e5bfc1029c92a7e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252A5 14636 bytes
font_02_sfnt_off0002803a.bin
0d510f439a73eae665af138ecef4372c9b1dc55d02d5656a9604ccfb30fc5e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2803A 14640 bytes
font_03_sfnt_off0002ab6d.bin
2bd6275d4a676f626c6d25b264ed3d77465d0366fa063b88794d59263ba1c3ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB6D 6956 bytes
font_04_sfnt_off0002bf8e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF8E 6084 bytes
font_05_sfnt_off0002cf23.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF23 3752 bytes

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