Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f6f129947415e0…

MALICIOUS

PDF

359.2 KB Created: 2015-08-28 17:35:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 976f55838d68f3611f3ef887bd816d82 SHA-1: 87d50b2e5db087ef1bbaeb91cfa50b8825d70139 SHA-256: 73f6f129947415e07690f841b31b9eeb032ed8a42f6ab97e96a78d38fd45ba9b
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 flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware distribution attempt.

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%9B%D0%B8%D1%81%D1%82%D0%BE%D0%B2%D0%BA%D0%B8+%D0%BE+%D0%B2%D1%80%D0%B5%D0%B4%D0%B5+%D0%BA%D1%83%D1%80%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809186_kaspiyskiy__gruz__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809114_via__high__definition_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809273_zhyul__vern__15_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005530b.bin
18e97bc824ee90811d06686208fc67503bb9f36da3a316a3ef984c7f57fd1905		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5530B 7696 bytes
font_01_sfnt_off0005692a.bin
ff3484541f4145d0241314ca99765082581f8fff59504436cfc057bd994b23fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5692A 16904 bytes

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