Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5b2d30a9aea203…

MALICIOUS

PDF

353.5 KB Created: 2015-08-28 11:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0dcdf1649a771b97e1ddfd2e8fa57fe5 SHA-1: f33ab96ec28049e46a6badef23df2e2eda5cff20 SHA-256: 8e5b2d30a9aea2039dead74acc6446af4677b92062134e6432c832f858bf9a50
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, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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%BB%D0%B0%D0%B2%D1%8F%D0%BD%D0%BE-%D0%B0%D1%80%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B5+%D0%B2%D0%B5%D0%B4%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789503_hp__deskjet_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4794/4794780_shema__vodosnabzheniya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4800/4800657_skachat__net__framework_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005378a.bin
91027e210999674f4ffccb4aa37fb2b6517827a818a88bacbd4047f9fb8c7dba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5378A 10196 bytes
font_01_sfnt_off00055396.bin
baaf30765f0da68fa89073755acc2177775af8b3cbe1ac86d5ee0429dc6accf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55396 16908 bytes

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