Malicious PDF — malware analysis report

Static analysis result for SHA-256 85038d5fc5084535…

MALICIOUS

PDF

368.8 KB Created: 2015-08-28 17:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cc602f8378bd06ebb4242393910df337 SHA-1: 6e8abae7bba549f6ee9b03376a8698e33c38ad8f SHA-256: 85038d5fc5084535cfcfb944a33fd5fc7f5ff548aadd3fda4a034ebdbe734f38
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%B0%D1%81%D1%81%D0%B0%D1%81%D0%B8%D0%BD+%D1%81%D0%BA%D1%80%D0%B8%D1%82+1+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809124_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809169_igruy__dlya__telefona_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809167_raspisanie__avtobusov__do_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057e2b.bin
e322c449e54cafb895af8a7594301f1df6268e9ba0ca3e162031730f7850e63d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E2B 8808 bytes
font_01_sfnt_off000596ff.bin
4151823b48de56810b9409127377e786b24316f54a90652aff224de5472408e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596FF 14040 bytes

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