Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2afcd41677cf4e…

MALICIOUS

PDF

187.8 KB Created: 2015-07-24 23:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1d541288b8b1461f8d6d01a65de1a03f SHA-1: fec5202b3edb6d81033b2da3aee1a4fa918b246e SHA-256: ea2afcd41677cf4e7d47aa50a9c0fe30575f37291b97d68d57ae6f566f087820
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the URL hosted on botcraftman.ru, which is likely used to deliver a secondary payload or phish for credentials.

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%B1%D0%BB%D0%B0%D0%BD%D0%BA+%D1%80%D0%B0%D1%81%D1%85%D0%BE%D0%B4%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BA%D0%B0%D1%81%D1%81%D0%BE%D0%B2%D0%BE%D0%B3%D0%BE+%D0%BE%D1%80%D0%B4%D0%B5%D1%80%D0%B0+%D1%83%D0%BA%D1%80%D0%B0%D0%B8%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185273_skachat_pesni_80_90_godov_russkie_sborniki.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185880_klyuch_aktivacii_dlya_clean_my_mac_2.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190071_skachat_trenazher_programmirovaniya_stankov_s_chpu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024c24.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C24 3556 bytes
font_01_sfnt_off000259a7.bin
2b4bb12b556c3e0e6e70a06c1b48da252f6fe964bab57b134a0fb2ca65992b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x259A7 14828 bytes
font_02_sfnt_off00028757.bin
b37701965d1bf3907c1453c42f5597b931bf661880ab3ca62e85abca0d314471		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28757 14532 bytes
font_03_sfnt_off0002b24a.bin
200608c3ed356e16b1a7dfb091df0a48b7141643b1a1ae0881181943c86b7a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B24A 6676 bytes
font_04_sfnt_off0002c56f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C56F 6084 bytes
font_05_sfnt_off0002d504.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D504 3752 bytes

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