Malicious PDF — malware analysis report

Static analysis result for SHA-256 36bb8841c2b56d0e…

MALICIOUS

PDF

183.5 KB Created: 2015-07-24 11:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a71a48fc070f9e718e47c8c1e38c6ccf SHA-1: 7ada91e67e5b2064b3c0c12414f245a3f8d907c2 SHA-256: 36bb8841c2b56d0e8e6c18b4fe1577728386d7764d8b1a6eb7a48380c320bad1
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 embedded URL, http://botcraftman.ru/?lip&keyword=Blokadahack+v1+6+by+dekos+exe&charset=utf-8, is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest a phishing or malware delivery 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=Blokadahack+v1+6+by+dekos+exe&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189913_skachat_chituy_dlya_tanki_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186410_zhenschina_uchebnik_dlya_muzhchin_chitat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185210_serial_mentovskie_voynuy_7_soderzhanie_seriy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a147.bin
144463807936990409f06a7b7f76a6bba3d32ea4678c97859cc0abcc49d0d049		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A147 6592 bytes
font_00_sfnt_off00023952.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23952 3556 bytes
font_01_sfnt_off000246d5.bin
0a67adba565a465d469c0ea01e4be783946ac06e7cb8e131043a99d6d64e33fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246D5 15436 bytes
font_02_sfnt_off000275a1.bin
cacb42ad4a3ab7e2f83dc72fc70c6f31d07878bfe0d6cfb51fafab2d2a564cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x275A1 14816 bytes
font_04_sfnt_off0002b431.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B431 6084 bytes
font_05_sfnt_off0002c3c6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3C6 3752 bytes

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