Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecdcda1b265bf782…

MALICIOUS

PDF

185.0 KB Created: 2015-07-24 03:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d5f8618307102ab5275fe05c3532bd94 SHA-1: 4bf5860cb8a1ecc09a53847e1e470ebdc9ce64a5 SHA-256: ecdcda1b265bf782b99b194ddb41ce47e414f0337417aca918eed5d44e091357
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure users to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+whatsapp+%D0%B4%D0%BB%D1%8F+samsung+bada+gt+s5250&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184298_interaura_neyronastroi_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187023_farming_simulator_2014_skachat_torrent_russkaya_versiya_dlya_pc.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184327_kupit_licenzionnuyy_maynkraft_za_10_rubley.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a3a6.bin
efd4caf8c0c1233aee414ef731e60ad7e6aad5a1ead1c9dcc41474bfd2d9cf1a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A3A6 7588 bytes
font_00_sfnt_off00023be1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BE1 3556 bytes
font_01_sfnt_off00024964.bin
843285f96392f7186d896e63198a8cbf90fe8c1adc85dba5abf64c0f3c365a38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24964 14708 bytes
font_02_sfnt_off000276dc.bin
03c51142f47ece8c06d77f836272aae8a7d761e0db4a7ff66857e0360c0515f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276DC 15224 bytes
font_04_sfnt_off0002ba0d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA0D 6084 bytes
font_05_sfnt_off0002c9a2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9A2 3752 bytes

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