Malicious PDF — malware analysis report

Static analysis result for SHA-256 374533d110a6c5c3…

MALICIOUS

PDF

186.3 KB Created: 2015-08-05 14:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e5db4bfd32d82a333519a3245e907a34 SHA-1: 19d95baddd3f2b903dfc3a7da322e47c6b8d9e3b SHA-256: 374533d110a6c5c31c30ecb207ab736995a140bf3f2974e3abdf56719cf105cc
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The primary malicious indicator is the embedded URL pointing to botcraftman.ru, which is associated with malicious activity. The file type and the nature of the URL suggest a phishing or redirection attempt to a compromised site.

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-7627299-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7627299-0
  • 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%B0%D0%BA%D1%82+%D0%BF%D1%80%D0%B8%D0%B5%D0%BC%D0%B0-%D0%BF%D0%B5%D1%80%D0%B5%D0%B4%D0%B0%D1%87%D0%B8+%D1%82%D1%80%D0%B0%D0%BD%D1%81%D0%BF%D0%BE%D1%80%D1%82%D0%BD%D0%BE%D0%B3%D0%BE+%D1%81%D1%80%D0%B5%D0%B4%D1%81%D1%82%D0%B2%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://img0.liveinternet.ru/images/attach/c/6//4304/4304854_skachat_bolshie_kartinki.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304481_skachat_ks_16_43_patch_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304853_shtatnoe_raspisanie_obrazec_zapolneniya_2014.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247e6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247E6 3556 bytes
font_01_sfnt_off00025569.bin
d7dc983c07fce94c98033795fe3fbd5a5f621343357dcbaa72564e7dd4732cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25569 14168 bytes
font_02_sfnt_off000281ed.bin
9c2c36520fa8b96a0bb2f6b73d3c6f7df4cd0c0f30bf51162760b0cf2f60fffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281ED 14468 bytes
font_03_sfnt_off0002ac9e.bin
f37c2e279503d29db3104ab79cd35e2de669c411ba65708816e411eadbcf8e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC9E 6604 bytes
font_04_sfnt_off0002bf82.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF82 6084 bytes
font_05_sfnt_off0002cf17.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF17 3752 bytes

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