Malicious PDF — malware analysis report

Static analysis result for SHA-256 f857c70b7ef53161…

MALICIOUS

PDF

186.6 KB Created: 2015-07-26 18:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fb8324dcddc325da0dcda9a6619459f5 SHA-1: 80025805ee464149a950de61b4df3e4a8dbf4b09 SHA-256: f857c70b7ef53161ecdc344c6b3748742a4701ced12ff570a8f933a908882317
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a link to known malicious redirector infrastructure. The primary malicious indicator is the embedded URL pointing to botcraftman.ru, which is associated with malicious activity. The document body content is not human-readable and appears to be structural data from the PDF generation tool.

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=%D0%BC%D0%B0%D1%80%D0%BB%D0%B0+%D1%81%D0%B8%D0%BB%D0%BB%D0%B8+%D1%88%D0%BA%D0%BE%D0%BB%D0%B0+%D1%84%D0%BB%D0%B0%D0%B9%D0%BB%D0%B5%D0%B4%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4214/4214052_msvcr71dll_skachat_besplatno_dlya_windows_7.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186321_propisi_zhukova_dlya_detey_6_let_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210002_lupdidu_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002472f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2472F 3556 bytes
font_01_sfnt_off000254b2.bin
88e78c7b74212ec17990498051e77f1a109c395c3a3aaec909e6b106fca81b6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254B2 14472 bytes
font_02_sfnt_off0002820a.bin
c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2820A 14520 bytes
font_03_sfnt_off0002acdc.bin
336b01d53c7998e41b72cf28f86b1241776b708934725c50dffd7fc44e8da393		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACDC 6856 bytes
font_04_sfnt_off0002c09f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09F 6084 bytes
font_05_sfnt_off0002d034.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D034 3752 bytes

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