Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3e037d6b6b3162…

MALICIOUS

PDF

364.2 KB Created: 2015-08-28 18:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: df6c049f4426bf84d6d047b54dcfe172 SHA-1: 4e298a83cf114afd1d36f8fc512ae1e3b891c42f SHA-256: fa3e037d6b6b3162318b4a90c1c9183897f981d66ea3892f5bfcce0a2e202b93
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for containing a link to a known malicious redirector, http://botcraftman.ru/. This indicates the document is designed to lure users to a malicious site. The ML classifier also strongly supports the malicious verdict. No scripts were extracted, and the document body was unreadable, so the attack pattern is based solely on the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%B4%D0%BD%D1%8F+%D1%80%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B6%D0%B5%D0%BD%D1%89%D0%B8%D0%BD%D1%8B+80+%D0%BB%D0%B5%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809943_logo__quiz__by_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809515_molitva__ob__ouyene_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809210_gta__5__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005633d.bin
cfbc7b9ceaa228e1dd6bae7200f2b9cf594ac9ef47cddea42e52f2a094db202c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5633D 8948 bytes
font_01_sfnt_off00057d18.bin
c3eb78effcffb013c8782f106da0e8d20b103c54b5eebf5a6f5b5257cb3c6d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D18 17068 bytes

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