Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a303b59aa7e495e…

MALICIOUS

PDF

358.0 KB Created: 2015-08-28 01:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3ea9ef6fabc9119c7737640a6b1cc550 SHA-1: 07b1fe676606aa1734cdb6bd270efa5e95222a68 SHA-256: 5a303b59aa7e495ecff4d11efae22a0e5374de969613676c23195c194c4ea0a8
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 lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D1%80%D0%B5%D0%BA%D0%BE%D0%BC%D0%B5%D0%BD%D0%B4%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%8E%D1%80%D0%B8%D1%81%D1%82%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789346_skachat__programmu__besplatno_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788067_igra__zimnyaya__ruybalka_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790322_skachat__igru__gta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000554ee.bin
f9ca95ae562bbf9b071e6803ee05a19f364605a4336fea56a16c8a386afd61fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554EE 8060 bytes
font_01_sfnt_off00056c59.bin
2ef0855cda7fc646b22ffa0c98baaa16c31aa0a2acd807f97ba81dbdd30f7878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C59 14332 bytes

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