Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fd2b8590a563c5…

MALICIOUS

PDF

354.3 KB Created: 2015-08-22 09:05:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3ce06f9441eff986925e46b528452ad7 SHA-1: 24f371ec0e8632d01b5e1cab08ac122a3a354de6 SHA-256: 01fd2b8590a563c53f7c9497933a3780ded0498aa64682303f17e56ed22ea12c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to deliver a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to downloading drivers. The ML classifier also strongly indicated maliciousness.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+crystal+soundfusion+tm+cs4281+wdm+audio&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674550_vuyyti_iz_zonuy_komforta_kniga_brayan_treysi_chitat_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674516_nyensi_diskografiya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674610_kak_zanimatsya_seksom_v_gta_5.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000543ad.bin
49b17157a56b832cc87ed0185f4e9e9ddad43e872eabcf6457ff22d55709951a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x543AD 11000 bytes
font_01_sfnt_off00056284.bin
e593e537dc1bc2e3ad2a55607535f96f248a2a060d12b9144bd984cf3eeaac89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56284 12004 bytes

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