Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6725e324225f07f…

MALICIOUS

PDF

342.1 KB Created: 2015-08-20 08:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bc7bb709ab294de9f600174d84093667 SHA-1: e55742250868f9c3a5171e407df3e930e7417a5f SHA-256: d6725e324225f07f363c484af2e52d3d9caa24d2f3519b54a455b6da4c04762d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link that points to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of this link suggests the document is intended to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, but the redirector URL is the primary indicator of malicious intent.

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%BF%D1%80%D0%B5%D1%81%D0%B5%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%BB%D0%B0%D0%B9%D1%82%D1%80%D1%83%D0%BC+5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639693_skachat_besplatno_porno_s_sobakami.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639299_skachat_chituy_dlya_bitva_za_tron_vkontakte.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639114_skachat_maynkraft_132_besplatno_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005121f.bin
af2c495fb3c6b525839f3b03b90a8e7002759685c5bcbab96c7ee6df3fcea489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5121F 7996 bytes
font_01_sfnt_off00052903.bin
b7bbe3fdd60ab2411377511904e676da29046c60206240159a9f913620c6477e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52903 15556 bytes

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