Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea788bdc228f82d3…

MALICIOUS

PDF

367.3 KB Created: 2015-08-21 09:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b18425ce3c18126623e69def309d5917 SHA-1: 9a2f58e4c47213b5ca7737a67be549c4c8e7dc3a SHA-256: ea788bdc228f82d3933c3701e65fba8fcc43bd1997c5ed8599648c0db62adc90
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is highly suspicious and likely serves as a gateway to a malicious site. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of the document's specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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+disciples+2+%D0%B2%D0%BE%D1%81%D1%81%D1%82%D0%B0%D0%BD%D0%B8%D0%B5+%D1%8D%D0%BB%D1%8C%D1%84%D0%BE%D0%B2+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654682_skachat_programmu_torrent_3x_speed.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654808_skachat_mod_na_skayrim_stat_verhovnuym_korolem.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654773_panasonic_kx_tca115ru.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000573c4.bin
5d670260ab10badce9a3f479c3f38644ec1c3a698132e7917773885a41ac1c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x573C4 9508 bytes
font_01_sfnt_off00058e65.bin
80f1964e6928084c1f2b00f0b701b31d2cfa1fa681fadb077f1013faacf04bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E65 15968 bytes

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