Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5939ac6717d75fa…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 09:35:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 337a99e3c84ee5b274803a557b9cac24 SHA-1: 05b3f2c89a9fec6da0fd5931a4327f6593b9dc70 SHA-256: f5939ac6717d75fa5ec39283edc97b0bac8f690976765825c52de9f82ed809e7
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. The embedded URL http://botcraftman.ru/ leads to known malicious infrastructure. No scripts were extracted from this sample, but the presence of the malicious link strongly suggests a phishing or malware distribution attempt.

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%B1%D0%BB%D0%B0%D0%B3%D0%BE%D0%B2%D0%BE%D0%BB%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%B8%D1%86%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383924_goluye_devushki_oboi_dlya_rabochego_stola.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383870_himiya_9_klass_gabrielyan_chitat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383863_notuy_iz_serialov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243ab.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243AB 3556 bytes
font_01_sfnt_off0002512e.bin
a8e835cd236d554eb597022a3e3e06ca29a77ef6a02b25a5d9d5fb6b6172f5bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2512E 15032 bytes
font_02_sfnt_off0002804e.bin
592cbecf2b3c1ba62c3bb05785c1bbccb9270320d61d540e7b4a27048d02816e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2804E 14696 bytes
font_03_sfnt_off0002abbf.bin
a6c166cc7e74cab38339013f0790758cecaad33ed88b1e0530fd60a608331edd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABBF 6800 bytes
font_04_sfnt_off0002bf52.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF52 6084 bytes
font_05_sfnt_off0002cee7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEE7 3752 bytes

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