Malicious PDF — malware analysis report

Static analysis result for SHA-256 16993ee7b368b25a…

MALICIOUS

PDF

364.6 KB Created: 2015-08-29 11:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 325826488848f3427f36a630b0a66f78 SHA-1: 98c69baa4b70988ae9a4bbeef51345cfba093430 SHA-256: 16993ee7b368b25a7683d79731c9d8d3320a33af11d27043a92c0638b13258f2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. This suggests the document is designed to lure users to a harmful website, likely for phishing or malware delivery. Although no scripts were extracted, the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%83%D1%85%D0%B0%D1%8F+%D1%87%D0%B5%D1%80%D0%B5%D0%BF%D0%B0%D1%85%D0%B0+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829915_vneklassnoe__chtenie__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829897_skachat__maynkraft__s_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830046_teoriya__ogranicheniy__goldratta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056e15.bin
c594c5a8dfda4b8046ebbe4fc08438ae023591fc1c7defb8547a74769432bd0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x56E15 9896 bytes
font_01_sfnt_off00058887.bin
3f903a70918bd01910e4f0a54a0cf7030fb7c1a2057e388d2e3ae7e250a178df
pdf-font-stream PDF embedded font (sfnt) at offset 0x58887 13200 bytes