Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9697ff765a111dc…

MALICIOUS

PDF

183.8 KB Created: 2015-08-05 16:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c1c4910e404268c6e900c3ce999777cc SHA-1: 98e814276dc5eb501c9cb3e8100e85c0067bc192 SHA-256: b9697ff765a111dcbda08992104502064d66c85796cc42ea56aebca2b445aa56
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 assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirectors. No scripts were extracted, and the document body was not parsable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D0%B4%D1%83%D0%B1%D1%80%D0%BE%D0%B2%D0%B8%D0%BD%D0%B0+%D0%BF%D1%81%D0%B8%D1%85%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305349_besplatnuye_myeyliki_v_moem_mire.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304627_terminuy_po_informatike.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305780_skachat_igru_na_planshet_kot.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d35.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D35 3556 bytes
font_01_sfnt_off00024ab8.bin
ce7886dee9e40cd2ab4cffe13c632a72faba90259c7029d1575ae996ca80124d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AB8 14132 bytes
font_02_sfnt_off00027716.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27716 14532 bytes
font_03_sfnt_off0002a206.bin
6968fc9c6f34f551dcd21f80fdadd0d1613410f51da02f892050bd2b8a8e9862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A206 6772 bytes
font_04_sfnt_off0002b57f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B57F 6084 bytes
font_05_sfnt_off0002c514.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C514 3752 bytes

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