Malicious PDF — malware analysis report

Static analysis result for SHA-256 3572ff7bbd9a47b3…

MALICIOUS

PDF

185.2 KB Created: 2015-08-05 16:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e525dac9c4b0026954479a1a49740f35 SHA-1: 8d51b41176698418845e002970a8c5c65d5d0920 SHA-256: 3572ff7bbd9a47b332c5015da3c49009acedda5bf34cc859e69cb6f36c6896ec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a malicious redirector link. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%82%D1%8E%D0%BD%D0%B5%D1%80%D0%B0&charset=utf-8` is identified as a known malicious redirector. This indicates the document is designed to lure users to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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-7517368-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7517368-0
  • 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=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%82%D1%8E%D0%BD%D0%B5%D1%80%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306343_kotuy_voiteli_zabuytuyy_voitel_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306383_kak_peredat_fayluy_s_kompyutera_na_kompyuter_cherez_wifi.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306118_trudovaya_pensiya_po_starosti_kursovaya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024430.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24430 3556 bytes
font_01_sfnt_off000251b3.bin
5367680979d5b72ae3fdf6875811f5ec4c3a3410c2300479cd230c664c0a4cdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251B3 14272 bytes
font_02_sfnt_off00027eb3.bin
2894a2e95f819f01c1e340b533698417996480c8c8e83cbe4142995621a3eef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EB3 14468 bytes
font_03_sfnt_off0002a963.bin
eacfe890109beb6ab1f5a9c1aeb4e9ec54ecfa3566b175b235d378518dd989a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A963 6288 bytes
font_04_sfnt_off0002bb23.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB23 6084 bytes
font_05_sfnt_off0002cab8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAB8 3752 bytes

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