Malicious PDF — malware analysis report

Static analysis result for SHA-256 8886e09e0217c5ff…

MALICIOUS

PDF

374.8 KB Created: 2015-08-28 19:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b05d87154178cc276d9edf282ea4fcf7 SHA-1: 4aa57aa36b0494287082aaadd24b847c78c7ad72 SHA-256: 8886e09e0217c5ff79707d69bda17d1123e417945e673c2dc6d3d1432a898d96
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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+%D1%83%D0%B6%D0%B0%D1%81%D1%8B+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B2+%D1%85%D0%BE%D1%80%D0%BE%D1%88%D0%B5%D0%BC+%D0%BA%D0%B0%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810758_silneyshiy__v__istorii_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809545_harakteristika__voditelya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810394_skachat__gta__4_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059665.bin
71def2c414e8f50d4b75f8940f28d643cacdd8da8b0d5b7071ced09db5df4ead		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59665 8820 bytes
font_01_sfnt_off0005b027.bin
168dad58555a40d4508a2c016da59806cd12049bb142119d8ca09bea65229f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B027 13924 bytes

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