Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f574c94dab168b5…

MALICIOUS

PDF

361.7 KB Created: 2015-08-25 15:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 6dc0bcb8c98e65d57dcaa38c11da4188 SHA-1: 8696aa2739b94b7116480f44b6472e8ebb89f946 SHA-256: 7f574c94dab168b5a54842ba440152e0a82e0917fcb82478768b6d2012df65a6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The embedded URL is likely the primary mechanism for delivering a subsequent payload or leading the user to a malicious site. No scripts were extracted, but the presence of a malicious link strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%B8%D0%B1%D1%83%D0%BC%D0%B5%D1%82%D0%B8%D0%BD+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D1%8E&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731250_vo__imya__zhizni_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731512_klyuchi__dlya__kasperskiy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731489_gost__rv__15703_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000561ab.bin
39b463167aa4a30ae55ba28f0d0e3ad6fb5d5d79ee3bf3db4c0fa00ae0caf75e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x561AB 9372 bytes
font_01_sfnt_off00057bb1.bin
26495e12b2041e7bd2c080796204785a18e823d3691b006054676120cd7efb34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BB1 13664 bytes

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