Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ba212337e88083…

MALICIOUS

PDF

352.1 KB Created: 2015-08-28 11:29:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0cf618bc9532b9ee2311c62dcfddf535 SHA-1: 2c9c5f5bc4134c4ea2904e589729ace9ae10add5 SHA-256: 99ba212337e88083e1d32474f1718c2c32eacb7ed65c03b9e68b54e1cfc325e8
90 Risk Score

Malware Insights

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

The PDF contains an embedded link that points to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be luring the user to click the malicious link, likely to download further malware or phish for credentials. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D0%B4%D0%BB%D1%8F+%D0%B1%D0%B5%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%BD%D1%8B%D1%85+%D1%81%D0%BA%D1%80%D0%B0%D0%BF%D0%B1%D1%83%D0%BA%D0%B8%D0%BD%D0%B3&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802367_anketa__dlya__klienta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802365_funbox__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802364_google__chrome__poslednyaya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000532e6.bin
554d19bc7f628e3523ac39fbcb68580697bc8f9f930005cb915f66f9490daf1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x532E6 8116 bytes
font_01_sfnt_off00054a83.bin
3fc67910b51f64ac8e4e83615eb48d43c6790342729413ce25deb3f23a0181c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A83 18008 bytes

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