Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf8d93252d69c58…

MALICIOUS

PDF

185.1 KB Created: 2015-08-08 09:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0472ba55243a6eae63736cfb30f771b3 SHA-1: 40c244c646e04edbc026bd884d031d5311edf6ba SHA-256: fcf8d93252d69c58876117b35a7e9b4f28758398b59211aec1f7f1dd1c3fc908
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. ClamAV also detected it as Pdf.Dropper.Agent-7627262-0. The embedded URL points to a known malicious domain, suggesting the document's purpose is to redirect users to a harmful site. 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-7627262-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7627262-0
  • 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%BA%D0%BB%D1%8E%D1%87+%D0%BA+%D0%B8%D0%B3%D1%80%D0%B5+%D0%B4%D1%80%D0%BE%D0%B6%D1%8C+%D0%BF%D1%80%D0%B8%D0%B7%D1%80%D0%B0%D1%87%D0%BD%D1%8B%D0%B9+%D0%BF%D0%BE%D0%BF%D1%83%D1%82%D1%87%D0%B8%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384322_skachat_shriftuy_arno_pro.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384189_peredat_kontaktuy_s_nokia_na_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383930_razmeruy_na_pogonah_ml_serzhanta_policii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024101.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24101 3556 bytes
font_01_sfnt_off00024e84.bin
72bf9f90575b8498696807a64a9a4df8b48152118945a6551e496f0d4f0eebca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E84 14500 bytes
font_02_sfnt_off00027b6a.bin
9e81c738c4f732a40f62a8f8793fd6f60475579d5b1faff37ee980f3198e18f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B6A 14468 bytes
font_03_sfnt_off0002a618.bin
2b926a23e3e07177ce42c3c41b7bbeea3cf3bb00356627ff20a34009a0be0020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A618 7112 bytes
font_04_sfnt_off0002ba98.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA98 6084 bytes
font_05_sfnt_off0002ca2d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA2D 3752 bytes

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