Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2546a005a2957b…

MALICIOUS

PDF

185.8 KB Created: 2015-07-23 20:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 252730b5ec5da868bfaa1a97b21eff07 SHA-1: 722e6249e3c06678dd15d174047d92b3a9bdfb9f SHA-256: 3e2546a005a2957b7d07921aa1a7fec4d7a3580444cb180a8d12d303c077eb45
152 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. ClamAV also detected it as Pdf.Dropper.Agent-7493892-0. The embedded malicious URL, http://botcraftman.ru/, strongly suggests the document's purpose is to lure users to a site that likely hosts further malicious content or phishing pages. No scripts were extracted, but the PDF structure and malicious link are sufficient indicators.

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-7493892-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493892-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%BA%D0%B0%D1%81%D0%BF%D0%B5%D1%80%D1%81%D0%BA%D0%BE%D0%B3%D0%BE+2015+%D0%BD%D0%B0+%D0%B3%D0%BE%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184483_i_yeho_letit_po_goram_skachat_epub.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184319_kryak_alavar_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183195_lada_kalina_shema_yelektrooborudovaniya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002433a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2433A 3556 bytes
font_01_sfnt_off000250bd.bin
f555bc61a78578415711b59af0dbc10cbde09e196f0a0bd6656193e0a63ad062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250BD 14352 bytes
font_02_sfnt_off00027dc8.bin
507da6e1735a148ac2864e45e75ec6c79c377cd1bdfede5ffe0417c1ffbf1568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DC8 14640 bytes
font_03_sfnt_off0002a8fd.bin
57de39a06783873934899f0bf1ef05fa377994f8e321228111e1f2e7618c051a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8FD 7032 bytes
font_04_sfnt_off0002bd74.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD74 6084 bytes
font_05_sfnt_off0002cd09.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD09 3752 bytes

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