Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d61f72214e3ca12…

MALICIOUS

PDF

362.4 KB Created: 2015-08-21 13:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f7d0fce6cf9e8c7f9d9a331c8def68e8 SHA-1: 2dab8aeb67510d8f871412530de059e56665399c SHA-256: 8d61f72214e3ca1217c21ce8f0667f6bed89e6aa928a3448ead18d76824df477
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was heavily obfuscated.

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=%D0%A1%D1%83%D0%BF%D0%B5%D1%80+%D0%B8%D0%BD%D1%84%D0%BE+%D0%B6%D0%B0%D0%BD%D1%8B+%D1%81%D0%B0%D0%BD%D1%8B+%D0%B3%D0%BE%D1%80%D0%BE%D1%81%D0%BA%D0%BE%D0%BF+%D0%BA%D1%8B%D1%80%D0%B3%D1%8B%D0%B7%D1%87%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4656/4656996_novatoruy_skachat_besplatno_vse_serii.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655583_butokssept_instrukciya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4656/4656346_vecherniy_kvartal_posledniy_vuypusk_11_10_2015_skachat_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000564bc.bin
1785b0016f631a38f0547402ec94c91f71b464727134c039b26101f170c0347d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564BC 8856 bytes
font_01_sfnt_off00057e6f.bin
0cfa919d5426a6e253cedd460c1d589f955c3a0de23d312657c600dbf7722ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E6F 13716 bytes

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