Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e02cab50090535…

MALICIOUS

PDF

355.1 KB Created: 2015-08-27 23:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d32aef17e3f4ac3d6febb37d759045c6 SHA-1: 3c2a2f964fff914f49508b69b5fb96084e800ded SHA-256: 27e02cab500905351dd7e505de36c687fdbbba00d80c929e2c06cb1a37a3da83
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file 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 is sufficient to classify the attack pattern.

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%B1%D0%BB%D0%BE%D0%BA%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B0+%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%BF%D1%80%D0%B8+%D0%B7%D0%B2%D0%BE%D0%BD%D0%BA%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788094_shpargalki__po__biologii_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787775_skachat__oboi__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788036_spravka__dlya__vozhdeniya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000549df.bin
329f2ad90696b783a5f6e2488995ea3d4552bd9d4c2f395808849ae9cf8d4a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x549DF 9380 bytes
font_01_sfnt_off00056436.bin
277352aff9a1d8efb6045ae7cf3719ee932cbe59f85118f79be730ca6c5b8d50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56436 12780 bytes

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