Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f86c6669480d401…

MALICIOUS

PDF

363.4 KB Created: 2015-08-28 13:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4efb931bf342946e0881e37cf77501b2 SHA-1: 8f740d6ac5349d4ac0134802d6544c1eea92c0c4 SHA-256: 0f86c6669480d4010fecc71d8081f0717c5de9129c0ae25641f00e85047680bd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating a malicious intent to lead the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious redirect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BE%D0%B7%D0%B4%D0%B0%D0%BD%D0%B8%D1%8F+%D0%B4%D0%B0%D0%B1%D1%81%D1%82%D0%B5%D0%BF%D0%B0+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803139_teoriya__bolshogo__vzruyva_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804001_driverpack__solution__12_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802957_skachat__maynkraft__074_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056c0f.bin
a0a7469bffa809243959d49b4e3c26c036fdfb6679facd2c299f764075500766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C0F 8680 bytes
font_01_sfnt_off00058511.bin
b01ec4bce727f2da312244adb112fa663392bc30148fa6723a778bfb0fb70c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58511 12780 bytes

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