Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed9396d85428a5f…

MALICIOUS

PDF

359.0 KB Created: 2015-08-20 08:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 28b851d1edeb8c10335bf0f78f6c499f SHA-1: c19f562feb550030e7758ecb43eb8c59ec8cc343 SHA-256: 1ed9396d85428a5f1c3365656802db6a6ba53dbf33eea35c1863521e35cb8b7e
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of compromise, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was unreadable, but the malicious link is sufficient evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%9E%D1%82%D1%87%D0%B5%D1%82+%D0%BF%D0%BE+%D0%BF%D0%B5%D0%B4%D0%B0%D0%B3%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9+%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B5+%D0%B2+%D1%88%D0%BA%D0%BE%D0%BB%D0%B5+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9+%D1%8F%D0%B7%D1%8B%D0%BA&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639418_sladkaya_zhizn_serial_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638858_gta_naruto_shippuden_world_of_shinobi_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639206_igruy_dlya_dzhoystika_na_pk_skachat_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054ffd.bin
e6c645f51b2d063f0628db7a97f21040b57ba57145536fae1346e70f77356b89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54FFD 9392 bytes
font_01_sfnt_off00056a2a.bin
16c85d7fec8bfb0478119fdeadbffc3f34463da41139fa75055a70bd02e209f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A2A 16456 bytes

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