Malicious PDF — malware analysis report

Static analysis result for SHA-256 489ef38f32d0f519…

MALICIOUS

PDF

347.3 KB Created: 2015-08-28 17:37:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c6e0a2d8d9c7037c0a9277edb60cbcb4 SHA-1: f4c218814290257bb86462e8fa17d81206445435 SHA-256: 489ef38f32d0f519d44db910505e5ad411714023993925c2ed715b7bc13227a2
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to botcraftman.ru, which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely used to lure the user to a site that may host further malicious content or phishing forms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7966983-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7966983-0
  • 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%BD%D0%B8%D0%B2%D0%B5%D1%80%D1%81%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%BA+%D0%B8%D0%B3%D1%80%D0%B0%D0%BC+%D0%B0%D0%BB%D0%B0%D0%B2%D0%B0%D1%80&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809154_didyulya__skachat__besplatno_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809224_skachat__mod__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809237_skachat__besplatno__film_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000526ae.bin
d0574af02b5fbcfd5130c355443b122939040a81364871e107e0a4b154855378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x526AE 8084 bytes
font_01_sfnt_off00053e28.bin
627d5aa3e8060d7834acf02a723bba4ca2677742d4f769ffcf121851a9ecdfd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E28 15524 bytes

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