Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea1d0e52354236b…

MALICIOUS

PDF

184.6 KB Created: 2015-07-24 04:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d137b10a01b666e80b702a61e0965b34 SHA-1: eb5c33c04fb98a1d9ce3c1166a6b4f527a9b8ae8 SHA-256: aea1d0e52354236b6e2ae139f51e1f6c38a217650f447edaa2d9056739890694
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. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/...` is identified as a known malicious redirector, suggesting the document's purpose is to lure users to this site to initiate a download of a second-stage payload. The ClamAV detection `Pdf.Dropper.Agent-8928045-0` further supports its role as a dropper.

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-8928045-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8928045-0
  • 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%98%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D0%B8+%D0%BB%D0%B5%D0%B3%D0%BE+%D0%BF%D0%BE+%D1%81%D0%B1%D0%BE%D1%80%D0%BA%D0%B5+%D0%BA%D0%BE%D1%80%D0%B0%D0%B1%D0%BB%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185333_skachat_piksart_na_kompyuter.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186003_the_sims_3_medieval_piratuy_i_znat_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186335_skachat_igru_gta_sanandres_s_russkimi_mashinami_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024003.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24003 3556 bytes
font_01_sfnt_off00024d86.bin
8bffb91cce7aca70aca37daef4e1a7eb70278e7d0dd17e0c76a9532c5292f987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D86 14860 bytes
font_02_sfnt_off00027b5d.bin
d22647a20bdf7fdf39209c54252ae5535b39cfb889418d78aaf9459f7adfd96a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B5D 14468 bytes
font_03_sfnt_off0002a612.bin
1a3d68021b3593af82742d1027870c7f1321c126d4f2c61d61d07ba259bb43a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A612 6524 bytes
font_04_sfnt_off0002b8a1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8A1 6084 bytes
font_05_sfnt_off0002c836.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C836 3752 bytes

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