Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fc6d64c537968e…

MALICIOUS

PDF

186.4 KB Created: 2015-07-23 20:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1c53afabd7e816533c3ec0ec12d5c12f SHA-1: ad8498e9df1a2c4322d753d682ce285b6b67a0cd SHA-256: d4fc6d64c537968eb118bcbc856828e4f701ff9f69d999dc5ca0fd03f176d88b
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to botcraftman.ru, which is flagged by multiple security tools. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary function appears to be redirecting the user to a potentially harmful external resource.

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-7493423-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493423-0
  • 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%B2%D0%BE%D1%80%D0%B4+%D0%BF%D1%80%D0%BE%D0%B1%D0%BD%D1%83%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E+%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/5//4184/4184418_novaya_forma_mchs_dlya_fotoshopa.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184438_blank_transportnoy_nakladnoy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183246_model_idef0_primer.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244cc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244CC 3556 bytes
font_01_sfnt_off0002524f.bin
160e8174a548b2d3c5e623bfab3585e35c3aa9d3f20c68786b474d74ea551117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2524F 14880 bytes
font_02_sfnt_off00028142.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28142 14468 bytes
font_03_sfnt_off0002abf0.bin
de5c86ec030811cd61ff671308bce51795f8573e9f8663f9d66d5882293bee1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABF0 6896 bytes
font_04_sfnt_off0002bfe5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFE5 6084 bytes
font_05_sfnt_off0002cf7a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF7A 3752 bytes

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