Malicious PDF — malware analysis report

Static analysis result for SHA-256 95904838cbb2e382…

MALICIOUS

PDF

363.1 KB Created: 2015-08-28 13:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ba5e485f44fecceb51a6284f974305ca SHA-1: 18824565112e3f70fa007296d2aeb295a7dd2648 SHA-256: 95904838cbb2e382e234e381edf5b518c0d561201328fcb64209911af1219c62
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure, but the presence of the malicious URL strongly suggests a phishing or malware distribution attempt.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%B4%D1%8E%D0%B9%D0%BC%D0%BE%D0%B2%D0%BE%D1%87%D0%BA%D0%B0+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803317_ryse__son__of_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804162_form__caption__nakrutit_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803674_skachat__ramki__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055fa9.bin
4b3fb678a74f99da1d3d33834ed7b51c9322670841dc001987eda0c4c6d7c6c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55FA9 8708 bytes
font_01_sfnt_off00057917.bin
ed97f344600d58a5749d0bf266f4473d9e10698dc0ad70818f9f5e9cae4f55a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57917 17364 bytes

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