Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5fafdf2bc0aa36f…

MALICIOUS

PDF

184.1 KB Created: 2015-07-24 19:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ddab7a3372c8d24ba19b07b5c197bf7b SHA-1: 2c90ec2dd00edc1f7929c76a90c298fc82c6a4fa SHA-256: e5fafdf2bc0aa36fcb1d75748ae74ca08d5842151a2240a4bcdfe783226e328b
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/, which is flagged by multiple security tools. This indicates an attempt to lure the user to a harmful site. The ML classifier also strongly suggests maliciousness. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8748832-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8748832-0
  • 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=ct+hack+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192173_myuller_i_suyn_zhaketuy_i_palto_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189119_seriynuyy_nomer_dlya_nfs_shift_2_unleashed.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184873_skachat_autoclicker_seosprint.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023dac.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DAC 3556 bytes
font_01_sfnt_off00024b2f.bin
4dce3352928e3e59932930ed808e052754186481c07cf8151bee57ffac57c970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B2F 14512 bytes
font_02_sfnt_off0002780b.bin
6fa754f94626f74245c2cd6abd0f61dc0ed6b6556785dac2b816ba58ce3097d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2780B 14892 bytes
font_03_sfnt_off0002a34d.bin
355980a5b226f466790e01b45fa98b06f376c5024a76c1577076b7e23d4f2956		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A34D 6648 bytes
font_04_sfnt_off0002b66b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B66B 6084 bytes
font_05_sfnt_off0002c600.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C600 3752 bytes

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