Malicious PDF — malware analysis report

Static analysis result for SHA-256 114e4d8f790235a6…

MALICIOUS

PDF

184.9 KB Created: 2015-08-08 09:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ddb1516d27970394d8f2bb944907c4a7 SHA-1: ef1b3a217df717c0d0b85270a08318f4bf44bee9 SHA-256: 114e4d8f790235a6cdb85c9765b1b29719ddc5c2f1c07baa607ee83c3a88a627
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure users to a harmful site. The ClamAV detection and ML classifier strongly suggest malicious intent, classifying it as a dropper. The embedded URL is the primary indicator of malicious activity, likely serving as a first stage to download additional payloads.

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-7621709-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7621709-0
  • 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%B1%D0%BE%D1%82+%D0%B4%D0%BB%D1%8F+%D0%B8%D0%B3%D1%80%D1%8B+%D0%BD%D0%B5%D0%B1%D0%B5%D1%81%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384209_skachat_matlab_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384265_luchshaya_programma_dlya_postroeniya_silovogo_fundamenta.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384323_zmodeler_3_skachat.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024105.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24105 3556 bytes
font_01_sfnt_off00024e88.bin
7fd9f8daa3984a468f8aa3f87efc7ca306d30b1abecc4c6fad1dc34d42cb6f7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E88 14564 bytes
font_02_sfnt_off00027b96.bin
a9770cbb19a982a1ca245ae9dd57c2ebe78e8510dfe5e68aa43f25edc86204a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B96 14468 bytes
font_03_sfnt_off0002a648.bin
cef0f0046dfaf99de851996a344820e938e0ab98b87d90da8e9d71b3cfe2c686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A648 6860 bytes
font_04_sfnt_off0002b9fb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9FB 6084 bytes
font_05_sfnt_off0002c990.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C990 3752 bytes

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