Malicious PDF — malware analysis report

Static analysis result for SHA-256 2585c25b8ac280d5…

MALICIOUS

PDF

352.5 KB Created: 2015-08-20 08:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-02
MD5: 1245349455b624388beab4ccd2089153 SHA-1: 5911db79c0409b0677330cb3065230c0da6f354c SHA-256: 2585c25b8ac280d5eb512e9904aa617b354996ed31e714a5d95027b0bf355443
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a 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 a malicious URL suggests the document is designed to lure the user to a compromised site, likely for phishing or to download further malicious content.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%B8%D1%81%D0%BF%D0%B5%D1%82%D1%87%D0%B5%D1%80+realtek+hd&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639058_soldatuy_armageddona_chast_2_skachat.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639118_skachat_chit_na_blokadu_2015_goda.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639656_skachat_1s_roznica_8_torrent.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B0B 9624 bytes
SHA-256: fb2a5c2cdb9f3c8641b4ccc17b1894bdc1a69dd0a7e008c63361ad76c93dd578
font_01_sfnt_off000555cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x555CB 14324 bytes
SHA-256: 7408a2e0486bdb5f6717e894f37e5f01fb96d5ff7f92ab83ef50446118771249

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