Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7a4297027a941b…

MALICIOUS

PDF

184.7 KB Created: 2015-07-25 12:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9ef10848eff8f2d8e9d9f63bfc10b816 SHA-1: 3974720961d385ee1e7b122cac1041c2e2fa6084 SHA-256: ce7a4297027a941b3d32175c94077e2e33b38fe060f7d6fb65a3607836785f75
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link and a high ML score. The embedded URL points to 'botcraftman.ru', which is identified as known malicious redirector infrastructure. The ClamAV detection 'Pdf.Dropper.Agent-8789653-0' further supports its malicious nature, indicating it likely acts as a dropper for further malicious content.

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-8789653-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789653-0
  • 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=%D0%9A%D0%B0%D0%BA+%D1%80%D0%B0%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D1%82%D1%8C+%D0%BF%D0%BB%D0%B5%D0%B5%D1%80+samsung+yp+u6&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200342_sokrovische_montesumuy_3_skachat_besplatno_bez_registracii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184962_skachat_drayver_crystal_soundfusion_tm_cs4281_wdm_audio.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192573_pdd_2015_belarus_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a35b.bin
8bf0acd5a8a4519a1293c727d841570226c2d46ae86049214c19771afa138931		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A35B 7468 bytes
font_00_sfnt_off00023e07.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E07 3556 bytes
font_01_sfnt_off00024b8a.bin
6440dad2cab26ac3f384a53744a87774c6d81ca31f122a8831ca3cf9ec261006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B8A 14396 bytes
font_02_sfnt_off00027834.bin
4130394c9a5f4c984c8f0f8e3f42cf38a441698c2d9613fd1a488bfd44c657ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27834 14632 bytes
font_04_sfnt_off0002b924.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B924 6084 bytes
font_05_sfnt_off0002c8b9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8B9 3752 bytes

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