Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f4fd6f7f4c211a…

MALICIOUS

PDF

394.6 KB Created: 2015-08-25 22:10:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0543bd3f4f5fd411c8eb5ac11b5c9335 SHA-1: 78ee7446e90ae8d9f4102423d2679f122e89f88c SHA-256: 18f4fd6f7f4c211ab2c5a2933e231bec3a3f37b238ce70103b991ead8de74e70
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. While no scripts were directly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent, likely to deliver a secondary payload or phish for information. The document body is heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9345

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2%D0%B5%D0%B4%D1%8C%D0%BC%D0%B0%D0%BA+%D0%B7%D0%BE%D0%BB%D0%BE%D1%82%D0%BE%D0%B5+%D0%B8%D0%B7%D0%B4%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+1501304+the+witcher+gold+edition+2010%D1%80%D1%83%D1%81multi9&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740573_otkruytuyy__bank__zadaniy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740567_podpolnaya__imperiya__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740623_obrazec__raspiski__o_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005e2af.bin
dc65e6c376dae7621a8fe23d7b3a4f9805fa407194e0e2424e79478e01cf78c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2AF 11204 bytes
font_01_sfnt_off00060294.bin
e43ab29f987e9d2d921e4729b8294bd0b83863d7fba691b5ac3fdde58b0c697a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60294 12224 bytes

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