Malicious PDF — malware analysis report

Static analysis result for SHA-256 dedd6cec7f84c408…

MALICIOUS

PDF

184.3 KB Created: 2015-08-08 10:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c36b7212e46866f55d12dc4e6a24d9b7 SHA-1: f1ad94e7bbb4a3b988503888153718bc1a99dffc SHA-256: dedd6cec7f84c40889aaf07553ced9f14656ca6b99b86268e5053569d45ac7c0
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 linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirector activity. No scripts were extracted, and the document body was not parsable text, limiting the analysis to the URL and heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%84%D0%BE%D1%80%D0%BC%D0%B0+%D0%BF%D0%BE+%D0%BA%D0%BD%D0%B4+1151085+%D0%B7%D0%B0+2014+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384342_chertezhi_besedok_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384072_agentstvo_anomalnuyh_yavleniy_klyuch.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384366_skachat_porno_uzbek.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d97.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D97 3556 bytes
font_01_sfnt_off00024b1a.bin
d59e9d90d9b083bb689fda775c17248d01063cc1bb40982c1b59501e6d46d58a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B1A 14172 bytes
font_02_sfnt_off0002778a.bin
bfa2034c12fc536474dd12b423a9a7b584d9caa0e5b33f16ea8dc8acaef96cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2778A 14640 bytes
font_03_sfnt_off0002a2ba.bin
ff2588db80234c050934016239bbfb76d27e44e31fbe841742dd2a2e33024c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2BA 7032 bytes
font_04_sfnt_off0002b73e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B73E 6084 bytes
font_05_sfnt_off0002c6d3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6D3 3752 bytes

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