Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66858b226240135…

MALICIOUS

PDF

185.7 KB Created: 2015-07-23 21:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d76975707f3b7eea85d32a08d50fe58d SHA-1: 77cb16fdd241134a68b8d530885dcf8a362adfc2 SHA-256: f66858b22624013504ca7691f3d2c33c2dbd861f88583079ec2cf80930aad28c
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 alert for a malicious redirector link and a high ML score. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to a malicious site, likely for further exploitation or malware delivery. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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-7495115-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7495115-0
  • 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%BF%D1%80%D0%B8%D0%BF%D1%8F%D1%82%D1%8C+3d+%D1%8D%D0%BA%D1%81%D0%BA%D1%83%D1%80%D1%81%D0%B8%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184526_zvuk_mela_po_doske_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184561_chitat_knigi_konstantin_muravev_neuchtennuyy_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183246_model_idef0_primer.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243e5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243E5 3556 bytes
font_01_sfnt_off00025168.bin
b43be40019f18b3ef769fb29064ec3756484cc95f2ddc447c00e90719f005bd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25168 14568 bytes
font_02_sfnt_off00027efa.bin
0c5251b7dcce2c0cba86ccfdfa497e4b2d245c3392529cafbe16784a85a9d8cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EFA 14468 bytes
font_03_sfnt_off0002a9a8.bin
5a4454bad9feaefa72b05951a6e21c37f22b4b5692de626efc7854a62504a69b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9A8 6712 bytes
font_04_sfnt_off0002bcfb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCFB 6084 bytes
font_05_sfnt_off0002cc90.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC90 3752 bytes

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