Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1549f2d3c6ccb1…

MALICIOUS

PDF

350.3 KB Created: 2015-08-21 00:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e1ca3b817866a62c0fde6b5ed6afa017 SHA-1: 2a81cfedf77aa2f5802860ff417cf782c6edc619 SHA-256: 6b1549f2d3c6ccb100cf88683020cd44dac42c09a9bcf137f464c12de661cf3a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to reference software downloads, suggesting a lure to trick users into clicking the malicious URL. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=acronis+disk+director+11+home+%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+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4645/4645741_sanpin_232132403_s_izmeneniyami_na_2015_god_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4643/4643724_elena_petrova_leyna_3_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4650/4650743_kalambur_derevnya_durakov_video_na_telefon_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052cfa.bin
8db7e3e9cec7db9fd52933f68e36a9c5932959c6b40c068a98bd83f5c23baeec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52CFA 9368 bytes
font_01_sfnt_off00054731.bin
b90479de18fd65068acbc11c1be502ef2aad6110c22eefa71e232e6f42358532		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54731 16456 bytes

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