Malicious PDF — malware analysis report

Static analysis result for SHA-256 882fa22d1b4dcc22…

MALICIOUS

PDF

346.2 KB Created: 2015-08-27 10:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9c758480381909bee7a989314b6d685f SHA-1: b05cb32e6ba5ba947b73cf797edf743080dbb609 SHA-256: 882fa22d1b4dcc2272c34203b9e68ecf2bd117440030094b5d13e3d56fc1d2a6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of the malicious URL suggests the document is designed to lure the user to a compromised site, likely for phishing or further malware delivery.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D1%8E+%D0%B1%D1%83%D0%BC%D0%B1%D0%BE%D0%BA%D1%81+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772496_r__24001__zayavlenie_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772310_skachat__kartu__permskogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772128_gta__4__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005239e.bin
9182d02ddaa6283f1b35c2006c81779af42de0e1d0a79698b46f97f6cd2969e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5239E 8468 bytes
font_01_sfnt_off00053c52.bin
7ca2cd29ff4a715446dc1c0e3174ce1e2eef9c1a8b4b4982a46fce4ce2dc3c38
pdf-font-stream PDF embedded font (sfnt) at offset 0x53C52 13968 bytes