Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90493854888c28f…

MALICIOUS

PDF

356.1 KB Created: 2015-08-25 09:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d62047baf8b982a03e65db3b041af3cd SHA-1: 56be8495180398e1a71560471a22db5206850948 SHA-256: e90493854888c28fb05fa00db730c3ac07e33983c5873de7c40cc1c3bb264211
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. The embedded URL points to 'http://botcraftman.ru/', which is identified as malicious infrastructure. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious URL strongly suggests a phishing or malware delivery attempt.

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%9A%D0%BB%D1%8E%D1%87+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B9+fifa+13&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4726/4726612_vay__fay__pirat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4726/4726324_tekst__pesni__tolko_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4726/4726015_spravochnik_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000548c4.bin
c0a3e4317df16490f0b9401df0963fe44e68a920e4b3e5b0901e5c0d0c10466f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548C4 8280 bytes
font_01_sfnt_off0005601c.bin
49dc86251b09273c32ebcdcd4ef1cd6d68fc2db2fdff74db2d143f3cb57d7d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5601C 15912 bytes

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