Malicious PDF — malware analysis report

Static analysis result for SHA-256 77980f6a5cc4c505…

MALICIOUS

PDF

346.4 KB Created: 2015-08-25 15:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c43bba34031f8fee3635679cb9e2caba SHA-1: 4fa620d9d218e034121ada40d71d1376d25a93f2 SHA-256: 77980f6a5cc4c5053ab8fd4f4fbd64d73e6ad491366d10e94996a78ed9c430ba
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link to a known malicious redirector, botcraftman.ru, which is disguised as a KMS activator download. This indicates a phishing attempt to lure users to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an attempt to deliver a payload or redirect the user to a compromised site.

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=kms+activator+windows+7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732108_uchebnik__matematika__3_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731786_skachat__besplatno__porno_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731844_skachat__drayvera__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051e1f.bin
e6672757b1ba8850799760c26568e8331fb1473c54c364981a6d391a4f14f5bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E1F 9608 bytes
font_01_sfnt_off00053938.bin
8274541a645645b22811d6b43baa3f47bdf4b61f1f2a1b850a36800fd5af345f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53938 16488 bytes

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