Malicious PDF — malware analysis report

Static analysis result for SHA-256 e626a2607c83169e…

MALICIOUS

PDF

185.4 KB Created: 2015-08-05 15:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3554a00e253de827cac37af2037fc7c6 SHA-1: 883683808f892394d999d091e2bbf77691f2fce9 SHA-256: e626a2607c83169ecf3c4370672883ef00ddbf59bbe06a1e3ae087b92490e456
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 assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a site that distributes malware or conducts phishing. No scripts were extracted, and the document body was not sufficiently readable to provide further context.

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+game+maker+81+pro+rus+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305236_diplom_stroitelstvo_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304743_assai_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305128_koduy_na_risen.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a649.bin
50f87ac61a2727962b97eeb8ce31f557292d9ccfa576089dc3c3b6eddcd22a61		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A649 7420 bytes
font_00_sfnt_off00023eec.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EEC 3556 bytes
font_01_sfnt_off00024c6f.bin
65b0962495b714d45b26bb15cc220480964924704ac3c902d3048a8919696992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C6F 15044 bytes
font_02_sfnt_off00027b28.bin
b48d122aaaf9df1d46630f32bf32e0d2afd318509c5f6aadba103e37ffe8fc90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B28 14632 bytes
font_04_sfnt_off0002bbf4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBF4 6084 bytes
font_05_sfnt_off0002cb89.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB89 3752 bytes

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