Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee3e0cf072b28a8…

MALICIOUS

PDF

188.1 KB Created: 2015-08-08 09:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e313363fe2a39dcf3eb6eae01ee1df40 SHA-1: 3f245793a171b642c96e6c5b73973e9b1d789175 SHA-256: 8ee3e0cf072b28a8c44651cab891fcf426ff01e147d700d273005022b4987055
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-7523617-0. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-7523617-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7523617-0
  • 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%BC%D1%83%D0%B7%D1%8B%D0%BA%D1%83+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B0%D0%B3%D0%B0%D1%82%D0%B0+%D0%BA%D1%80%D0%B8%D1%81%D1%82%D0%B8+%D0%BB%D1%83%D1%87%D1%88%D0%B5%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383942_skachat_besplatno_igru_russkaya_ruybalka_na_telefon_nokia.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383838_otchet_o_dvizhenii_denezhnuyh_sredstv_kosvennuyy_metod.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383878_skachat_photoshop_cs6_portable_rus.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b77.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B77 3556 bytes
font_01_sfnt_off000258fa.bin
8164117bbbe6685099733816c23ba4966f70f9c52907486b8f1a6f248c4ad523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258FA 15080 bytes
font_02_sfnt_off0002877e.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2877E 14520 bytes
font_03_sfnt_off0002b24d.bin
79df483c69a140c8ff31b7d2995a40eab1447a8822b0dd8f2f82704d0e6f454f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B24D 6992 bytes
font_04_sfnt_off0002c691.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C691 6084 bytes
font_05_sfnt_off0002d626.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D626 3752 bytes

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