Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9dd8aba03ad75c…

MALICIOUS

PDF

360.5 KB Created: 2015-08-29 01:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9b1298abc653c3881c3b1e7539cbac95 SHA-1: f3d1802cbcff8125b39fa92991dbd0bea1f68a6c SHA-256: ae9dd8aba03ad75cc0b970f64d3496c8168fe530ed977dc5860d04b0549097d5
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as malicious infrastructure. No scripts were extracted, but the presence of the malicious link suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B2%D0%BE%D1%80%D0%B4+2010+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5+%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://img0.liveinternet.ru/images/attach/c/7//4818/4818358_moduy__skayrim__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817462_virtualnaya__laboratoriya__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818247_ramki__dlya__teksta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055c91.bin
8a39ab157d4e8b9b7d2351872f9c1840c5c5a2298f80723da8bb42b620231818		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C91 9064 bytes
font_01_sfnt_off00057666.bin
6b1662a526ed988f79f2e8a56775c50507f05316b7f17ea0036ef2241f892cf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57666 13660 bytes

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