Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5112758317706a4…

MALICIOUS

PDF

302.2 KB Created: 2015-08-26 10:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 003ea63244877f744bc6236c86bd7ca6 SHA-1: 22a80f65e7f9a920ccbc210002fd03d6355416bd SHA-256: e5112758317706a436803d4381371ce3befd9cfd403c435cd58b6eeb0a08d7bc
90 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.7490

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=%D0%BA%D1%80%D1%8F%D0%BA+%D0%BD%D0%B0+%D1%84%D0%B8%D1%84%D0%B0+15&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752173_skachat__besplatno__ballada_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751748_cdw___.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751969_reshit__uravnenie__s_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047760.bin
1984e46d5576f76c5515ccaf9439cc6ff8df40675e3102a426e84aea1c654ca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47760 8288 bytes
font_01_sfnt_off00048f41.bin
b1382b37120714bc386e54da655f205cf0fc22f5421d05dea6c5819d7f291dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48F41 13388 bytes

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