Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3263579d7eb97c1…

MALICIOUS

PDF

184.2 KB Created: 2015-07-24 11:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c44692acc4c9fb7b172e6f650f8339c9 SHA-1: c40c9b87305bc5324fafdfdd84cc50ed5c283c6b SHA-256: e3263579d7eb97c1b78535452d4a2853531ced9003622f5513aab5a2511b8b90
150 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 ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted from this sample, but the presence of the malicious link strongly suggests a phishing or redirection attempt.

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-7631105-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7631105-0
  • 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%9F%D1%80%D0%BE%D0%B9%D1%82%D0%B8+%D1%82%D0%B5%D1%81%D1%82+%D0%BD%D0%B0+%D0%B1%D0%B5%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190116_bludnuyy_suyn_dina_rubina_skachat_besplatno_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191979_igrat_v_nastoyaschiy_maynkraft_bez_registracii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184646_dnevnik_slabaka_kniga_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fac.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FAC 3556 bytes
font_01_sfnt_off00024d2f.bin
33d386b7cc147c9311fdf246cea1342d304930bcc9436eace0c5398d6f52a2ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D2F 14460 bytes
font_02_sfnt_off00027a9c.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A9C 14468 bytes
font_03_sfnt_off0002a54f.bin
5f244fdb4e29a56a24e6e7ee6298e940507ae33c65674b170759218f43607b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A54F 6336 bytes
font_04_sfnt_off0002b71a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B71A 6084 bytes
font_05_sfnt_off0002c6af.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6AF 3752 bytes

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