Malicious PDF — malware analysis report

Static analysis result for SHA-256 01339e1991c81681…

MALICIOUS

PDF

360.5 KB Created: 2015-08-21 09:30:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 7e4b90be1854ec972aec0cba1fcc76c4 SHA-1: 59c6e7710336f0b9f68a01d965cc6547a3c58d98 SHA-256: 01339e1991c81681395cd89174e1da5d3de320107c5218a3efddccc23fc46035
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a link to a known malicious redirector infrastructure at botcraftman.ru. This heuristic indicates the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%D1%86%D0%B8%D1%80%D0%BA+%D0%B1%D1%80%D1%8F%D0%BD%D1%81%D0%BA+%D0%B0%D1%84%D0%B8%D1%88%D0%B0+%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654697_ts4exe_skachat_dlya_sims_4.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654721_film_schenok_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654698_wetransfer_fayloobmennik_na_russkom_yazuyke.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000555af.bin
555002fdd171a755b385c6ef8069795ad8441a6eaca8f98aaafc415574a2000c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x555AF 9024 bytes
font_01_sfnt_off00056fa1.bin
b6ceef31b166bf8796b83b2fc3328f05222974bd3924006f1ee16ab68392da6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56FA1 16704 bytes

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