Malicious PDF — malware analysis report

Static analysis result for SHA-256 81dac47dd1adb979…

MALICIOUS

PDF

360.6 KB Created: 2015-08-28 11:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5c9f946c55c5f5674c37d47e5ebe3dda SHA-1: 015dbbdfcffe94dec226ad402a3bbfb0fc3282d7 SHA-256: 81dac47dd1adb979d1b06c1cec982886f016e5c463c60a0a595cbd387ba81c48
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link strongly suggests a malicious intent, likely related to social engineering or credential harvesting.

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%BA%D0%BE%D1%81%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5+%D1%80%D0%B5%D0%B9%D0%BD%D0%B4%D0%B6%D0%B5%D1%80%D1%8B+2+%D0%BF%D0%B5%D1%80%D0%B5%D0%B7%D0%B0%D0%B3%D1%80%D1%83%D0%B7%D0%BA%D0%B0+%D0%BF%D1%80%D0%BE%D1%85%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BA%D0%B2%D0%B5%D1%81%D1%82%D0%BE%D0%B2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802481_yenterofuril__cena__instrukciya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802734_skachat__knigu__dumay_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802679_yetot__mir__priduman_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055b56.bin
c7b4f608fbe39de04ec7eefe113d76847d150aff990767795b99201f9373758f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B56 9972 bytes
font_01_sfnt_off000576e0.bin
ee529115ea456341fd26fca3c12fb8a75185d23aca873a5a31f4f37f23807438		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576E0 13944 bytes

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