Malicious PDF — malware analysis report

Static analysis result for SHA-256 19635c934ceb129d…

MALICIOUS

PDF

380.4 KB Created: 2015-08-20 08:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c4290a6f883634e0602371361fcc5bef SHA-1: a01a7ab45bcf1e4bb21357087780659d5e452a0c SHA-256: 19635c934ceb129dbd1d1001a7caac7dcfe9027c4dbbf30f6eed6a24f5c8d55f
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 further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%D0%BE%D0%B4+%D0%BD%D0%B0+%D0%BF%D1%80%D0%BE%D1%85%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BC%D0%B8%D1%81%D1%81%D0%B8%D0%B8+%D0%B2+gta+san+andreas&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639789_testuy_pfl_mvd_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639205_kak_sdelat_travorezku.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639583_du_speed_booster_dlya_kompyutera_skachat_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a8d0.bin
b421bab01146203cb26896446661738f149df1e015466fd0f3cf7a007a62b9e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8D0 9280 bytes
font_01_sfnt_off0005c2e3.bin
c489b423ca8b75e57a16ce7bd03e99a1cb955bc8d40711c7c38ad6afdca44a0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2E3 15448 bytes