Malicious PDF — malware analysis report

Static analysis result for SHA-256 dacd509a7651ef6b…

MALICIOUS

PDF

187.0 KB Created: 2015-08-08 09:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c48ba5fb9c4c1529780ea8c40114fd8d SHA-1: c400d5c5a0e5ce4307ae8f427c9c1046f0a2bea8 SHA-256: dacd509a7651ef6b620523ec77b52c410245b6f8e6251e63e3f4fb69fa1c0662
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also flagged the document with high confidence. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to deliver a secondary payload or redirect to a phishing site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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%BA%D0%B0%D0%B7+%D0%BE+%D0%BF%D0%BE%D0%BB%D0%BD%D0%BE%D0%B9+%D0%BC%D0%B0%D1%82%D0%B5%D1%80%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B9+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384010_ya_tebya_ot_sebya_otuchayu_tekst.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383994_brendbuk_primeruy_pdf.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383817_saminside_instrukciya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b39.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B39 3556 bytes
font_01_sfnt_off000258bc.bin
1d1f579fd90672ef0bcf188224c583a5d0cf997bd411b891541a165d196c88a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258BC 14032 bytes
font_02_sfnt_off00028484.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28484 14468 bytes
font_03_sfnt_off0002af37.bin
48572a2b0707f89b278f6717202197ebc043c8ebfa06dd0960baf7645103d65f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF37 6656 bytes
font_04_sfnt_off0002c237.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C237 6084 bytes
font_05_sfnt_off0002d1cc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1CC 3752 bytes

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