Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cbfdd457a3c98cd…

MALICIOUS

PDF

359.7 KB Created: 2015-08-24 00:26:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 989ef540d74fce885a10f8805e5a71b0 SHA-1: 28c5d7ed49655d1aee510b2fd48d0366e0cf15d0 SHA-256: 2cbfdd457a3c98cd21aec7fd0b6d46e5069e8b2389ceeb84d78dc9d265f984ad
90 Risk Score

Malware Insights

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

The PDF file contains an embedded link to a known malicious redirector URL, botcraftman.ru. This indicates the document is designed to lure users to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%BA%D0%BE%D0%B4+%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D0%B9%D1%80%D0%B8%D0%BC+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BD%D0%B0%D1%82%D1%83+%D1%81%D0%BE+%D0%B2%D1%81%D0%B5%D0%BC%D0%B8+%D0%BF%D1%80%D0%B5%D0%B4%D0%BC%D0%B5%D1%82%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693197_kartuy__so_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693031_master__i__margarita_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694165_kopatel__onlayn__moduy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000557bb.bin
3b6ad08b4a13c8107d2fbfeebb56cdac1024d04ce0bbe5a9d24e08b703a3cd94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x557BB 9484 bytes
font_01_sfnt_off00057325.bin
223132cf5aa79897754f6152588b7035b4cf06df2731ec4e0f5c275eff55eca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57325 13932 bytes

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