Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea1c3299d7975bc…

MALICIOUS

PDF

353.3 KB Created: 2015-08-19 14:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 17252ce5c0e703c1f7bd09bf74abacee SHA-1: 3603a784825a28df98a34234a74bd1de40873dc5 SHA-256: dea1c3299d7975bc61e453045543c1688b5a7b592b486253142a43ed895e3b81
90 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 malicious redirector link. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is known malicious infrastructure. The document body is heavily truncated and unreadable, but the presence of the malicious link is sufficient evidence for a phishing or malware delivery attack pattern.

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=%D0%A4%D0%B8%D0%BB%D0%B2%D0%BE%D1%80%D0%B4%D1%8B+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626481_pin_koduy_dlya_varfeys_2015_iyun.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626684_golaya_devochka_13_let_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626457_elena_zvezdnaya_moy_lichnuyy_vrag_2_otomstit_demonu.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000542d6.bin
4692187cab1efd9c336769ee878a57f0b81a904064b19fd12d90ac2bfed11293		 pdf-font-stream PDF embedded font (sfnt) at offset 0x542D6 8948 bytes
font_01_sfnt_off00055bf7.bin
85bfd510dc0bb709d5a3872e8c4c40b7996a4d73da1a7db673cf70b2aa4debcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55BF7 13044 bytes

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