Malicious PDF — malware analysis report

Static analysis result for SHA-256 3892908dfccd4aba…

MALICIOUS

PDF

385.6 KB Created: 2015-08-23 20:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 13965cb56a6365c91453585210f4c1e2 SHA-1: bab11d9adccb708ce8679ab66842a5e13ca953ad SHA-256: 3892908dfccd4abaf6ae7b89d7646128ad5c074fe28fc012d95816f9cc63b09d
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 infrastructure. The embedded URL, http://botcraftman.ru/?lip&keyword=%D0%98%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+elenberg+ms+4940&charset=utf-8, is the primary indicator of malicious intent. This suggests the document is designed to lure users to a compromised or malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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%98%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+elenberg+ms+4940&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690035_80211n__wlan__adapter_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690042_new__english__file_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b16d.bin
12fc3edf3d0a2d2346b25958b54ce1ee31d89b5f4decf8f799579e43b29fecdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B16D 10476 bytes
font_01_sfnt_off0005cf7d.bin
12a47551de7dcc9753debb9decaf38d0ae53eb52b88e038b196eb321ed7a1bd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF7D 18208 bytes

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