Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a5812b1670be3e1…

MALICIOUS

PDF

184.5 KB Created: 2015-07-24 20:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2554fd99671a2c2bf24b2e664b781f21 SHA-1: a3ad583faf0d33399ce0b88b370c460d16ae5176 SHA-256: 4a5812b1670be3e1e553ece76ea621684448839ad89e3643c964515b997258e5
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is designed to lure users to potentially harmful content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample, and the document body was not parsable.

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=matlab+70+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184628_foto_goluye_devushki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194321_skachat_igru_omsi_2_russkaya_versiya_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191957_proekt_torgovogo_pavilona_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d4b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D4B 3556 bytes
font_01_sfnt_off00024ace.bin
75019cac3706d761ec87e30b45b1f4dbbd4471ff939835f70d4763d18b5c596f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24ACE 14736 bytes
font_02_sfnt_off000278ad.bin
6f31b1428edf8052851878fb5e89b15646b4e9d43bcf77da9ac1645dc033f007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278AD 14756 bytes
font_03_sfnt_off0002a45a.bin
b409532c31f045d6e2ce14d0027634836d904fa74c479e9686b56e0589acdbf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A45A 6860 bytes
font_04_sfnt_off0002b841.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B841 6084 bytes
font_05_sfnt_off0002c7d6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7D6 3752 bytes

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